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The ''Sturmgeschütz III'' (StuG III)
assault gun Assault gun (from german: Sturmgeschütz - "storm gun", as in "storming/assaulting") is a type of self-propelled artillery which uses an infantry support gun mounted on a motorized chassis, normally an armored fighting vehicle, which are designed t ...
was Germany's most-produced fully tracked
armoured fighting vehicle An armoured fighting vehicle (AFV) is an armed combat vehicle protected by armour, generally combining operational mobility with offensive and defensive capabilities. AFVs can be wheeled or tracked. Examples of AFVs are tanks, armoured cars, ...
during
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
, and second-most produced German armored combat vehicle of any type after the
Sd.Kfz. 251 The Sd.Kfz. 251 ('' Sonderkraftfahrzeug 251'') half-track was a World War II German armored personnel carrier designed by the Hanomag company, based on its earlier, unarmored Sd.Kfz. 11 vehicle. The Sd.Kfz. 251 was designed to transport the ''P ...
half-track A half-track is a civilian or military vehicle with regular wheels at the front for steering and continuous tracks at the back to propel the vehicle and carry most of the load. The purpose of this combination is to produce a vehicle with the cro ...
. It was built on a slightly modified
Panzer III The ''Panzerkampfwagen III'', commonly known as the Panzer III, was a medium tank developed in the 1930s by Germany, and was used extensively in World War II. The official German ordnance designation was Sd.Kfz. 141. It was intended to fight ot ...
chassis, replacing the turret with an armored, fixed superstructure mounting a more powerful gun. Initially intended as a mobile
assault gun Assault gun (from german: Sturmgeschütz - "storm gun", as in "storming/assaulting") is a type of self-propelled artillery which uses an infantry support gun mounted on a motorized chassis, normally an armored fighting vehicle, which are designed t ...
for direct-fire support for infantry, the StuG III was continually modified, and much like the later '' Jagdpanzer'' vehicles, was employed as a
tank destroyer A tank destroyer, tank hunter, tank killer, or self-propelled anti-tank gun is a type of armoured fighting vehicle, armed with a direct fire artillery gun or missile launcher, designed specifically to engage and destroy enemy tanks, often ...
.


Development

The '' Sturmgeschütz'' originated from German experiences in
World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was List of wars and anthropogenic disasters by death toll, one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, ...
, when it was discovered that, during the offensives on the Western Front, the infantry lacked the means to engage fortifications effectively. The artillery of the time was heavy and not mobile enough to keep up with the advancing
infantry Infantry is a military specialization which engages in ground combat on foot. Infantry generally consists of light infantry, mountain infantry, motorized infantry & mechanized infantry, airborne infantry, air assault infantry, and mar ...
to destroy bunkers, pillboxes, and other minor fortifications with direct fire. Although the problem was well known in the German army, it was General
Erich von Manstein Fritz Erich Georg Eduard von Manstein (born Fritz Erich Georg Eduard von Lewinski; 24 November 1887 – 9 June 1973) was a German Field Marshal of the ''Wehrmacht'' during the Second World War, who was subsequently convicted of war crimes and ...
who is considered the father of the ''Sturmartillerie'' (assault artillery). The initial proposal was from von Manstein and submitted to General
Ludwig Beck Ludwig August Theodor Beck (; 29 June 1880 – 20 July 1944) was a German general and Chief of the German General Staff during the early years of the Nazi regime in Germany before World War II. Although Beck never became a member of the Na ...
in 1935, suggesting that ''Sturmartillerie'' units should be used in a direct-fire support role for infantry divisions. On 15 June 1936,
Daimler-Benz The Mercedes-Benz Group AG (previously named Daimler-Benz, DaimlerChrysler and Daimler) is a German multinational automotive corporation headquartered in Stuttgart, Baden-Württemberg, Germany. It is one of the world's leading car manufactu ...
AG received an order to develop an armoured infantry support vehicle capable of mounting a calibre artillery piece. The gun mount's fixed, fully integrated
casemate A casemate is a fortified gun emplacement or armored structure from which guns are fired, in a fortification, warship, or armoured fighting vehicle.Webster's New Collegiate Dictionary When referring to antiquity, the term "casemate wall" me ...
superstructure was to allow a limited traverse of a minimum of 25° and provide overhead protection for the crew. The height of the vehicle was not to exceed that of the average soldier. Daimler-Benz AG used the chassis and running gear of its recent Panzer III medium tank as a basis for the new vehicle. Prototype manufacture was passed over to
Alkett Alkett (german: Altmärkische Kettenwerk GmbH, lit=Altmark track works) was a major manufacturer of armored vehicles for the Wehrmacht during World War II. The main factory was located in Berlin-Borsigwalde on the Breitenbachstraße. As more s ...
, which produced five prototypes in 1937 on Panzer III Ausf. B chassis. These prototypes featured a
mild steel Carbon steel is a steel with carbon content from about 0.05 up to 2.1 percent by weight. The definition of carbon steel from the American Iron and Steel Institute (AISI) states: * no minimum content is specified or required for chromium, cobal ...
superstructure and a
Krupp The Krupp family (see pronunciation), a prominent 400-year-old German dynasty from Essen, is notable for its production of steel, artillery, ammunition and other armaments. The family business, known as Friedrich Krupp AG (Friedrich Krupp ...
short-barrelled,
howitzer A howitzer () is a long- ranged weapon, falling between a cannon (also known as an artillery gun in the United States), which fires shells at flat trajectories, and a mortar, which fires at high angles of ascent and descent. Howitzers, like ot ...
-like in appearance, 7.5 cm StuK 37 L/24 cannon. Production vehicles with this gun were known as ''Gepanzerte Selbstfahrlafette für Sturmgeschütz 7.5 cm Kanone Ausführung A bis D (Sd.Kfz.142)''. While the StuG was considered self-propelled artillery, it was not clear which land combat arm of the
German Army The German Army (, "army") is the land component of the armed forces of Germany. The present-day German Army was founded in 1955 as part of the newly formed West German ''Bundeswehr'' together with the ''Marine'' (German Navy) and the ''Luftwaf ...
would handle the new weapon. The '' Panzerwaffe'' (armoured corps), the natural user of tracked fighting vehicles, had no resources to spare for the formation of StuG units and neither did the infantry. It was agreed that it would best be employed as part of the artillery arm. The StuGs were organized into battalions (later renamed "brigades" for disinformation purposes) and followed their own doctrine. Infantry support using direct fire was its intended role. Later, there was also a strong emphasis on its use as an anti-tank gun. As the StuG was designed to fill an infantry close support combat role, early models were fitted with a
howitzer A howitzer () is a long- ranged weapon, falling between a cannon (also known as an artillery gun in the United States), which fires shells at flat trajectories, and a mortar, which fires at high angles of ascent and descent. Howitzers, like ot ...
-pattern, low-velocity 7.5 cm StuK 37 L/24 gun, much as the earliest versions of the fully turreted
Panzer IV The ''Panzerkampfwagen'' IV (Pz.Kpfw. IV), commonly known as the ''Panzer'' IV, was a German medium tank developed in the late 1930s and used extensively during the Second World War. Its ordnance inventory designation was Sd.Kfz. 161. The Panz ...
were. Low-velocity shells are lightly built of thin steel and carry a large charge of explosive, to destroy soft-skin targets and blast fortifications. Such shells do not penetrate armour well. After the Germans encountered the
Soviet The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...
KV-1 The Kliment Voroshilov (KV) tanks are a series of Soviet heavy tanks named after the Soviet defence commissar and politician Kliment Voroshilov who operated with the Red Army during World War II. The KV tanks were known for their heavy armour pr ...
and
T-34 The T-34 is a Soviet medium tank introduced in 1940. When introduced its 76.2 mm (3 in) tank gun was less powerful than its contemporaries while its 60-degree sloped armour provided good protection against anti-tank weapons. The C ...
tanks, the StuG was first equipped with a high-velocity 7.5 cm StuK 40 L/43 main gun (spring 1942) and in the autumn of 1942 with the slightly longer 7.5 cm StuK 40 L/48 gun. These high-velocity guns were the same as those mounted on the
Panzer IV The ''Panzerkampfwagen'' IV (Pz.Kpfw. IV), commonly known as the ''Panzer'' IV, was a German medium tank developed in the late 1930s and used extensively during the Second World War. Its ordnance inventory designation was Sd.Kfz. 161. The Panz ...
for anti-tank use but the heavy steel wall high-velocity shells carried much less explosive and had a lower blast effect for use against infantry or field fortifications. These versions were known as the ''7.5 cm Sturmgeschütz 40 Ausf.F'', ''Ausf. F/8'' and '' Ausf. G (Sd.Kfz.142/1)''. Beginning with the StuG III Ausf. G from December 1942, a 7.92 mm MG34 machine gun could be mounted on a shield on top of the superstructure for added anti-infantry protection. Some of the F/8 models were retrofitted with a shield. An additional coaxial 7.92 mm MG34 started to appear in 1944 and became standard on all production during the same year. The vehicles of the ''Sturmgeschütz'' series were cheaper and faster to build than contemporary German
tank A tank is an armoured fighting vehicle intended as a primary offensive weapon in front-line ground combat. Tank designs are a balance of heavy firepower, strong armour, and good battlefield mobility provided by tracks and a powerful ...
s; at 82,500 RM, a StuG III Ausf G was cheaper than a
Panzer III The ''Panzerkampfwagen III'', commonly known as the Panzer III, was a medium tank developed in the 1930s by Germany, and was used extensively in World War II. The official German ordnance designation was Sd.Kfz. 141. It was intended to fight ot ...
Ausf. M, which cost 103,163 RM. This was due to the omission of the turret, which greatly simplified manufacture and allowed the chassis to carry a larger gun. By the end of the war, ~11,300 StuG IIIs and StuH 42s had been built.Sturmgeschütz
wwiivehicles.com


Operational history

The ''Sturmgeschütz'' III-series of vehicles proved very successful and served on all fronts, from Russia to North Africa and Western Europe to Italy, as assault guns and tank destroyers. Because of their low silhouette, StuG IIIs were easy to camouflage and be hidden and were difficult targets to destroy. As of 10 April 1945, there were 1,053 StuG IIIs and 277 StuH 42s in German service. The StuG assault guns were cost-effective compared with the heavier German tanks such as the
Tiger I The Tiger I () was a German heavy tank of World War II that operated beginning in 1942 in Africa and in the Soviet Union, usually in independent heavy tank battalions. It gave the German Army its first armoured fighting vehicle that mounted ...
and the
Panther Panther may refer to: Large cats * Pantherinae, the cat subfamily that contains the genera ''Panthera'' and ''Neofelis'' **'' Panthera'', the cat genus that contains tigers, lions, jaguars and leopards. *** Jaguar (''Panthera onca''), found in S ...
, although as anti-tank guns they were best used defensively as the lack of a traversable turret and their generally thin armour was a severe disadvantage in the attack role. As the situation for the German military deteriorated further later in the war, more StuGs were built than tanks, particularly due to ease of production. In Italy, the Sturmgeschütz was highly-valued by crews fighting Allied armour, but was dogged by mechanical unreliability; particularly the delicate final drive units. The small box on the track cover, which was normally fixed on the engine deck, contained the track tools. In 1943 and 1944, the
Finnish Army The Finnish Army ( Finnish: ''Maavoimat'', Swedish: ''Armén'') is the land forces branch of the Finnish Defence Forces. The Finnish Army is divided into six branches: the infantry (which includes armoured units), field artillery, anti-aircraf ...
received 59 StuG III Ausf. Gs from Germany and used them against the Soviet Union. Thirty of the vehicles were received in 1943 and a further twenty-nine obtained in 1944. The first batch from 1943 destroyed at least eighty-seven enemy tanks for a loss of only eight StuGs (some of which were destroyed by their crews to prevent enemy capture). The later batch from 1944 saw no real action. After the war, the StuGs were the main combat vehicles of the Finnish Army up until the early 1960s when they were phased out. These StuGs gained the nickname "Sturmi" in the Finnish military, which can be found in some plastic scale-model kits. 100 StuG III Ausf. Gs were delivered to
Romania Romania ( ; ro, România ) is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern, and Southeast Europe, Southeastern Europe. It borders Bulgaria to the south, Ukraine to the north, Hungary to the west, S ...
in the autumn of 1943. They were officially known as TAs (or TAs T3 to avoid confusion with TAs T4 (Jagdpanzer IVs)) in their army's inventory. By February 1945, 13 were still in use with the 2nd Armoured Regiment. None of this initial batch survived the war. Thirty-one TAs were on the Romanian military's inventory in November 1947. Most of them were probably StuG III Ausf. Gs and a small number of Panzer IV/70 (V) (same as TAs T4). These TAs were supplied by the Red Army or were damaged units repaired by the Romanian Army. All German equipment was removed from service in 1950 and finally scrapped four years later due to the army's decision to use only Soviet armour. StuG IIIs were also exported to other nations friendly to Germany, including Bulgaria, Hungary, Italy, and Spain. Hungary fielded its StuG IIIs against Soviet forces as they invaded their country in end-1944 up until early 1945. As with Hungary, Bulgaria received several StuGs from Germany too but almost none saw service against the Soviets, the country having ended the alliance with Germany by switching sides to the Allies before the Soviets invaded. Post-WWII, these were used for a short time before being turned into fixed gun emplacements on the Krali Marko Line on the border with neighbouring Turkey. StuG IIIs were also given to the pro-German Ustashe Militia in Yugoslavia, most of which were captured in Yugoslavia by Tito's
Yugoslav partisans The Yugoslav Partisans,Serbo-Croatian, Macedonian, Slovene: , or the National Liberation Army, sh-Latn-Cyrl, Narodnooslobodilačka vojska (NOV), Народноослободилачка војска (НОВ); mk, Народноослобод� ...
during and after the war, as did German-operated vehicles. These were used by the
Yugoslav People's Army The Yugoslav People's Army (abbreviated as JNA/; Macedonian and sr-Cyrl-Latn, Југословенска народна армија, Jugoslovenska narodna armija; Croatian and bs, Jugoslavenska narodna armija; sl, Jugoslovanska ljudska ar ...
until the 1950s when they were replaced by more modern combat vehicles. Spain received a small number (around 10) of StuG IIIs from Germany during WWII, later sold to Syria between 1950 and 1960. Italy received the smallest number of StuG IIIs Germany distributed in the war, with only 3. After the Second World War, abandoned German StuG IIIs remained behind in many European nations Germany occupied during the war years, such as in Czechoslovakia, France, Norway and Yugoslavia. The
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nationa ...
also captured hundreds of ex-German StuGs, most ending up being donated to
Syria Syria ( ar, سُورِيَا or سُورِيَة, translit=Sūriyā), officially the Syrian Arab Republic ( ar, الجمهورية العربية السورية, al-Jumhūrīyah al-ʻArabīyah as-Sūrīyah), is a Western Asian country loc ...
. An Italian 12.7 mm
Breda-SAFAT machine gun Breda-SAFAT (''Società Italiana Ernesto Breda per Costruzioni Meccaniche / Breda Meccanica Bresciana'' - ''Società Anonima Fabbrica Armi Torino'') was an Italian weapons manufacturer of the 1930s and 1940s that designed and produced a range of m ...
taken from Syrian
Fiat G.55 The Fiat G.55 ''Centauro'' ( Italian: "Centaur") was a single-engine single-seat World War II fighter aircraft used by the ''Regia Aeronautica'' and the ''Aeronautica Nazionale Repubblicana'' in 1943–1945. It was designed and built in Turin by ...
was mounted on commander cupola with retrofitted anti-aircraft mount. Syria continued to use StuG IIIs along with other war surplus armoured fighting vehicles received from the USSR or Czechoslovakia (varying from long-barrelled Panzer IVs (late models) and
T-34-85 The T-34 is a Soviet medium tank introduced in 1940. When introduced its 76.2 mm (3 in) tank gun was less powerful than its contemporaries while its 60-degree sloped armour provided good protection against anti-tank weapons. The Chri ...
s) during the 1950s and up until the War over Water against Israel in the mid-1960s. By the time of the
Six-Day War The Six-Day War (, ; ar, النكسة, , or ) or June War, also known as the 1967 Arab–Israeli War or Third Arab–Israeli War, was fought between Israel and a coalition of Arab states (primarily Egypt, Syria, and Jordan) from 5 to 10 ...
in 1967, many of them had been either destroyed, stripped for spare parts, scrapped or emplaced on the
Golan Heights The Golan Heights ( ar, هَضْبَةُ الْجَوْلَانِ, Haḍbatu l-Jawlān or ; he, רמת הגולן, ), or simply the Golan, is a region in the Levant spanning about . The region defined as the Golan Heights differs between di ...
as pillboxes. Some remained in service up to the
Yom Kippur War The Yom Kippur War, also known as the Ramadan War, the October War, the 1973 Arab–Israeli War, or the Fourth Arab–Israeli War, was an armed conflict fought from October 6 to 25, 1973 between Israel and a coalition of Arab states led by E ...
in 1973. None remain in service today. A few Syrian StuG IIIs ended up in Israeli hands and have become war memorials or simply left rusting away on former battlefields.


Variants

Production numbers were: * StuG III prototypes (1937, 5 produced on Panzer III Ausf. B chassis): by December 1937, two vehicles were in service with Panzer Regiment 1 in Erfurt. Vehicles had eight road wheels per side with wide tracks, 14.5 mm thick soft steel superstructure and the 7.5 cm StuK 37 L/24 gun. Although not suitable for combat, they were used for training purposes as late as 1941. * StuG III Ausf. A (Sd.Kfz. 142; January–May 1940, 30+6 produced by
Daimler-Benz The Mercedes-Benz Group AG (previously named Daimler-Benz, DaimlerChrysler and Daimler) is a German multinational automotive corporation headquartered in Stuttgart, Baden-Württemberg, Germany. It is one of the world's leading car manufactu ...
): first used in the
Battle of France The Battle of France (french: bataille de France) (10 May – 25 June 1940), also known as the Western Campaign ('), the French Campaign (german: Frankreichfeldzug, ) and the Fall of France, was the German invasion of France during the Second Wor ...
, the StuG III Ausf. A used a modified 5./ZW chassis (Panzer III Ausf. F) with front armour strengthened to 50 mm. The last six vehicles were built on chassis diverted from Panzer III Ausf. G production. * StuG III Ausf. B: (Sd.Kfz 142; June 1940–May 1941, 300 produced by Alkett) Modified 7./ZW chassis (Panzer III Ausf. H), widened tracks (380 mm). Two rubber tires on each roadwheel were accordingly widened from 520 × 79 mm to 520 × 95 mm each. Both types of roadwheel were interchangeable. The troublesome 10-speed transmission was changed to a 6-speed one. The forwardmost return rollers were re-positioned further forward, reducing the vertical movements of the tracks before they were fed to the forward drive sprocket, and so reduced the chance of tracks being thrown. In the middle of production of the Ausf. B model, the original drive sprocket with eight round holes was changed to a new cast drive sprocket with six pie slice-shaped slots. This new drive wheel could take either 380 mm tracks or 360 mm wide tracks. 380 mm tracks were not exclusive to new drive wheels, as spacer rings could be added to the older sprockets. Vehicle number 90111 shows the older drive wheel with wider 380 mm tracks. * StuG III Ausf. C: (Sd.Kfz 142; April 1941, 50 produced) Gunner's forward view port above driver's visor was a
shot trap A shot trap is a deficiency in an armoured vehicle's design. It is a location where a shell that has struck but fails to penetrate may ricochet in such a manner as to hit another area of the vehicle where it is more likely to cause damage. For ...
and thus eliminated; instead, superstructure top was given an opening for gunner's periscope. Idler wheel was redesigned. * StuG III Ausf. D: (Sd.Kfz 142; May–September 1941, 150 produced) Simply a contract extension on Ausf. C. On-board intercom installed, transmission hatch locks added, otherwise identical to Ausf. C. * StuG III Ausf. E: (Sd.Kfz 142; September 1941February 1942, 284 produced) Superstructure sides added extended rectangular armoured boxes for radio equipment. Increased space allowed room for six additional rounds of ammunition for the main gun (giving a maximum of 50) plus a machine gun. One
MG 34 The MG 34 (shortened from German: ''Maschinengewehr 34'', or "machine gun 34") is a German recoil-operated air-cooled general-purpose machine gun, first tested in 1929, introduced in 1934, and issued to units in 1936. It introduced an entirely n ...
and seven drum-type magazines were carried in the right rear side of the fighting compartment to protect the vehicle from enemy infantry. Vehicle commanders were officially provided with SF14Z stereoscopic scissor periscopes. Stereoscopic scissor type periscopes for artillery spotters may have been used by vehicle commanders from the start. * StuG III Ausf. F: (Sd.Kfz 142/1; March–September 1942, 366 produced) The first real up-gunning of the StuG, this version uses the longer 7.5 cm StuK 40 L/43 gun. Firing armour-piercing Panzergranat-Patrone 39, the StuK 40 L/43 could penetrate 91 mm of armour inclined 30 degrees from vertical at 500 m, 82 mm at 1,000 m, 72 mm at 1,500 m, 63 mm at 2,000 m, allowing the Ausf. F to engage most Soviet armoured vehicles at normal combat ranges. This change marked the StuG as being more of a tank destroyer than an infantry support vehicle. An exhaust fan was added to the rooftop to evacuate fumes from spent shells, to enable the firing of continuous shots. Additional 30 mm armour plates were welded to the 50 mm frontal armour from June 1942, making the frontal armour 80 mm thick. From June 1942, Ausf. F were mounted with approximately 13 inch (334 mm to be exact) longer 7,5 cm StuK 40 L/48 gun. Firing above mentioned ammunition, longer L/48 could penetrate 96 mm, 85 mm, 74 mm, 64 mm respectively (30 degrees from vertical). * StuG III Ausf. F/8: (Sd.Kfz 142/1; September–December 1942, 250 produced) Introduction of an improved hull design similar to that used for the Panzer III Ausf. J / L with increased rear armour. This was 8th version of the Panzer III hull, thus the designation "F/8". This hull has towing hook holes extending from side walls. From October 1942, 30 mm thick plates of additional armour were bolted (previously welded) on to speed up the production line. From F/8, the 7.5 cm StuK 40 L/48 gun was standard until the last of the Ausf. G. Due to the lack of double baffle
muzzle brake A muzzle brake or recoil compensator is a device connected to, or a feature integral to the construction of, the muzzle or barrel of a firearm or cannon that is intended to redirect a portion of propellant gases to counter recoil and unwanted ...
s, a few L/48 guns mounted on F/8s were fitted with the single baffle ball type muzzle brake used on the Panzer IV Ausf. F2/G. * StuG III Ausf. G (Sd.Kfz. 142/1; December 1942April 1945, ~8,423 produced, 142 built on Panzer III Ausf. M chassis, 173 converted from Panzer III): The final and by far the most common of the StuG series. Upper superstructure was widened: welded boxes on either sides were abandoned. This new superstructure design increased its height to 2160 mm. The back wall of the fighting compartment got straightened, and the ventilation fan on top of the superstructure was relocated to the back of the fighting compartment. From March 1943, the driver's periscope was abandoned. In February 1943, Alkett was joined by MIAG as a second manufacturer. From May 1943, side hull spaced armour plates ''(Schürzen)'' were fitted to G models; these were primarily intended for protection against Russian anti-tank rifles, but were also useful against hollow-charge ammunition. Side plates were retro-fitted to some Ausf. F/8 models, as they were to be fitted to all front line StuGs and other tanks by June 1943 in preparation for the
battle of Kursk The Battle of Kursk was a major World War II Eastern Front engagement between the forces of Nazi Germany and the Soviet Union near Kursk in the southwestern USSR during late summer 1943; it ultimately became the largest tank battle in history ...
. Mountings for the ''Schürzen'' proved to be inadequate, as many were lost in the field. From March 1944, an improved mounting was introduced; as a result, side skirts are seen more often with late model Ausf G. From May 1943, 80 mm thick plates were used for frontal armour instead of two plates of 50 mm + 30 mm. However, a backlog of StuGs with completed 50 mm armour existed. For those, a 30 mm additional armour plate still had to be welded or bolted on until October 1943. A rotating cupola with periscopes was added for the Ausf G.'s commander. However, from September 1943, the lack of ball bearings (resulting from USAAF bombing of Schweinfurt) forced cupolas to be welded on. Ball bearings were once again installed from August 1944. Shot deflectors for the cupolas were first installed from October 1943 from one factory, to be installed on all StuGs from February 1944. Some vehicles without shot deflectors carried several track pieces wired around the cupola for added protection. From December 1942, a square machine gun shield for the loader was installed, allowing an MG34 to be factory installed on a StuG for the first time. When stowed this shield folded back, partially overlapping the front half of the loader's hatch cover. A curved protrusion welded to the backside of the shield pushed the shield forward as the front half of the loader's hatch cover was opened and guided the hatch cover to naturally engage a latch point on the shield thus, supporting the shield in its deployed position without exposing the loader to hostile forward fire. F/8 models had machine gun shields retro-fitted from early 1943. The loader's machine gun shield was later replaced by rotating machine gun mount that could be operated by the loader inside the vehicle sighting through a periscope. In April 1944, 27 of them were being field tested on the Eastern front. Favourable reports led to installation of these "remote" machine gun mounts from the summer of 1944. From October 1943, G versions were fitted with the ''Topfblende'' pot mantlet (often called ''Saukopf'' "Pig's head") gun mantlet without a coaxial mount. This cast mantlet, which had a sloped and rounded shape, was more effective at deflecting shots than the original boxy ''Kastenblende'' mantlet that had armour varying in thickness from 45 mm to 50 mm. The lack of large castings meant that the trapezoid-shape boxy mantlet was also produced until the very end. Topfblende were fitted almost exclusively to Alkett-produced vehicles. A coaxial machine gun was first added to boxy mantlets, from June 1944, and then to cast Topfblende, from October 1944, in the middle of "Topfblende" mantlet production. With the addition of this coaxial machine gun, all StuGs carried two MG 34 machine guns from autumn of 1944. Some previously completed StuGs with a boxy mantlet had a coaxial machine gun hole drilled to retrofit a coaxial machine gun; however, Topfblende produced from November 1943 to October 1944 without a machine gun opening could not be tampered with. Also from November 1943 onwards, all-metal return rollers of a few different types were used due to lack of rubber supply.
Zimmerit ''Zimmerit'' was a paste-like coating used on mid- and late-war German armored fighting vehicles during World War II. It was used to produce a hard layer covering the metal armor of the vehicle, providing enough separation that magnetically ...
anti-magnetic coating to protect vehicles from magnetic mines was applied starting in September ( MIAG facility) or November (
Alkett Alkett (german: Altmärkische Kettenwerk GmbH, lit=Altmark track works) was a major manufacturer of armored vehicles for the Wehrmacht during World War II. The main factory was located in Berlin-Borsigwalde on the Breitenbachstraße. As more s ...
facility) 1943 and ending in September 1944.


Further variants

In 1942, a variant of the StuG Ausf. F was designed with a true
howitzer A howitzer () is a long- ranged weapon, falling between a cannon (also known as an artillery gun in the United States), which fires shells at flat trajectories, and a mortar, which fires at high angles of ascent and descent. Howitzers, like ot ...
instead of the 7.5 cm StuK 40 L/43 cannon. These new vehicles, designated StuH 42 (''Sturmhaubitze 42'', Sd.Kfz 142/2), were designed to provide infantry support with the increased number of StuG III Ausf. F/8 and Ausf. Gs being used in the anti-tank role. The StuH 42 mounted a variant of the
10.5 cm leFH 18 The 10.5 cm leFH 18 (german: leichte Feldhaubitze "light field howitzer") is a German light howitzer used in World War II and the standard artillery piece of the Wehrmacht, adopted for service in 1935 and used by all divisions and artiller ...
howitzer, modified to be electrically fired and fitted with a
muzzle brake A muzzle brake or recoil compensator is a device connected to, or a feature integral to the construction of, the muzzle or barrel of a firearm or cannon that is intended to redirect a portion of propellant gases to counter recoil and unwanted ...
. Production models were built on StuG III Ausf. G chassis. The muzzle brake was often omitted due to the scarcity of resources later in the war. Alkett produced 1,299 StuH 42 from March 1943 to 1945, the initial 12 vehicles were built on repaired StuG III Ausf. F and F/8 from the autumn of 1942 to January 1943. In 1943, 10 StuG IIIs were converted to the StuG III (Flamm) configuration by replacing the main gun with a Schwade
flamethrower A flamethrower is a ranged incendiary device designed to project a controllable jet of fire. First deployed by the Byzantine Empire in the 7th century AD, flamethrowers saw use in modern times during World War I, and more widely in World ...
. These chassis were all refurbished at the depot level and were a variety of pre-Ausf. F models. There are no reports to indicate that any of these were used in combat and all were returned to Ausf. G standard at depot level by 1944. In late 1941, the StuG chassis was selected to carry the
15 cm sIG 33 The 15 cm sIG 33 (''schweres Infanterie Geschütz 33'', lit. "Heavy Infantry Gun") was the standard German heavy infantry gun used in the Second World War. It was the largest weapon ever classified as an infantry gun by any nation.Hogg, p. 2 ...
heavy infantry gun. These vehicles were known as
Sturm-Infanteriegeschütz 33B The Sturm-Infanteriegeschütz 33B ("Assault Infantry Gun 33B"), was a German self-propelled heavy assault gun used during World War II. Design and development A new, fully enclosed, and heavily armored boxy casemate superstructure was built o ...
. Twenty-four were rebuilt on older StuG III chassis of which twelve vehicles saw combat in the
Battle of Stalingrad The Battle of Stalingrad (23 August 19422 February 1943) was a major battle on the Eastern Front of World War II where Nazi Germany and its allies unsuccessfully fought the Soviet Union for control of the city of Stalingrad (later r ...
, where they were destroyed or captured. The remaining 12 vehicles were assigned to
23rd Panzer Division The 23rd Panzer Division ( en, 23rd Tank Division) was an armoured division in the German Army during World War II. Formed in France in late 1941, the division spent its entire combat history on the Eastern Front. History The 23rd Panzer Divisio ...
. Due to the dwindling supply of rubber, rubber-saving road wheels were tested during 8–14 November 1942, but did not see production. Bombing raids on the Alkett factory resulted in significant drops in StuG III production in November 1943. To make up for this loss of production,
Krupp The Krupp family (see pronunciation), a prominent 400-year-old German dynasty from Essen, is notable for its production of steel, artillery, ammunition and other armaments. The family business, known as Friedrich Krupp AG (Friedrich Krupp ...
displayed a substitution StuG on a Panzer IV chassis to Hitler on 16–17 December 1943. From January 1944 onwards, the StuG IV, based on the
Panzer IV The ''Panzerkampfwagen'' IV (Pz.Kpfw. IV), commonly known as the ''Panzer'' IV, was a German medium tank developed in the late 1930s and used extensively during the Second World War. Its ordnance inventory designation was Sd.Kfz. 161. The Panz ...
chassis and with a slightly modified StuG III superstructure, entered production. Field modifications were made to increase the vehicle's survivability, resulting in diversity to already numerous variants; cement plastered on front superstructure, older Ausf.C/D retrofitted with a KwK 40 L/48 gun, Ausf.G mounting Panzer IV cupola, a coaxial MG34 through a hole drilled on a boxy mantlet, et cetera. The Soviet SU-76i self-propelled gun was based on captured StuG III and
Panzer III The ''Panzerkampfwagen III'', commonly known as the Panzer III, was a medium tank developed in the 1930s by Germany, and was used extensively in World War II. The official German ordnance designation was Sd.Kfz. 141. It was intended to fight ot ...
vehicles. In total, Factory #37 in Sverdlovsk manufactured 181 SU-76i plus 20 commander SU-76i for
Red Army The Workers' and Peasants' Red Army (Russian language, Russian: Рабо́че-крестья́нская Кра́сная армия),) often shortened to the Red Army, was the army and air force of the Russian Soviet Federative Socialist R ...
service by adding an enclosed superstructure and the 76.2 mm S-1 tank gun. Approximately 10,000 StuG IIIs of various types were produced from 1940 to 1945 by Alkett (~7,500) and from 1943 to 1945 by MIAG (2,586). From April to July 1944, some 173 Panzer III were converted into StuG III Ausf. G. The 1,299 StuH 42 and the 12 conversions from StuG III were solely built by Alkett.


Gallery

File:Bundesarchiv B 145 Bild-F016202-23A, Russland, Sturmgeschütz III vor Ortschaft.jpg, StuG III Ausf.B in the Soviet Union, 1941. File:Bundesarchiv Bild 183-B28822, Russland, Kampf um Stalingrad, Infanterie.jpg,
Battle of Stalingrad The Battle of Stalingrad (23 August 19422 February 1943) was a major battle on the Eastern Front of World War II where Nazi Germany and its allies unsuccessfully fought the Soviet Union for control of the city of Stalingrad (later r ...
: Infantry and a supporting StuG assault gun advance towards the city center. File:StuG III destroyed Normandy.jpg, A StuG III Ausf.G destroyed in
Normandy Normandy (; french: link=no, Normandie ; nrf, Normaundie, Nouormandie ; from Old French , plural of ''Normant'', originally from the word for "northman" in several Scandinavian languages) is a geographical and cultural region in Northwestern ...
by a catastrophic internal explosion, 1944. File:StuG III Ausf. G.jpg, Finnish StuG III Ausf. G (June, 1944). File:Elements of the Sturmgeschütz-Brigade 303.jpg, German StuG III Ausf.F/8 in Finland showing concrete armour added to superstructure. File:StuG III in the Canadian War Museum.jpg, StuG III Ausf.G - Canadian War Museum. File:Stugbb.jpg, Late production Stug III Ausf. G, Museum of Slovak National Uprising, Slovakia


Operators

* - Main operator * - Several hundred supplied by Germany and (postwar) the USSR, referred to as ''TAs'' or ''TAs T-3''. All scrapped by 1954. * - Several supplied by Germany and (postwar) the USSR and all either scrapped or turned into gun emplacements bordering Turkey * - 30 StuGs, nicknamed "Sturmi", were bought in 1943 and another 29 bought in 1944, all directly from Germany. They were used during the Continuation War against the Soviet Union in 1944. * - Several captured after the war and either scrapped or sold to Syria. One vehicle is on display in
Banská Bystrica Banská Bystrica (, also known by other alternative names) is a middle-sized town in central Slovakia, located on the Hron River in a long and wide valley encircled by the mountain chains of the Low Tatras, the Veľká Fatra, and the Kremnica ...
,
Slovakia Slovakia (; sk, Slovensko ), officially the Slovak Republic ( sk, Slovenská republika, links=no ), is a landlocked country in Central Europe. It is bordered by Poland to the north, Ukraine to the east, Hungary to the south, Austria to the ...
. * - Several captured after the war and briefly operated before being scrapped or sold to Syria * - 50 given by Germany in 1944 *
Kingdom of Italy The Kingdom of Italy ( it, Regno d'Italia) was a state that existed from 1861, when Victor Emmanuel II of Kingdom of Sardinia, Sardinia was proclamation of the Kingdom of Italy, proclaimed King of Italy, until 1946, when civil discontent led to ...
- 12 received from Germany in 1943 and assigned to 1st Blackshirt Armoured Division "M" * - Surrendered German military equipment was used from 1947 to 1951 * - In 1943, Franco's Spain received 10 units and used them until 1954. One Ausf. G remains in drivable condition in the Museo Histórico Militar de
Cartagena, Spain Cartagena () is a Spanish city and a major Cartagena Naval Base, naval station on the Mediterranean Sea, Mediterranean coast, south-eastern Iberia. As of January 2018, it has a population of 218,943 inhabitants, being the region's second-largest ...
* - one Ausf. D variant received from Denmark in late 1945 and used for trials and testing of anti-tank mines, and one Ausf. G used for spare parts * - At least 30 obtained from various states including the Soviet Union, France, Spain and Czechoslovakia during the 1950s * - Several hundred captured vehicles used for testing and modifications, including the SU-76i assault gun and SG-122 self-propelled howitzer, with some others (very few) fielded for frontline use * - Many captured from Germany and its local allies in the Balkans and used up until the 1950s


Surviving vehicles

In working order * Jon Phillips Private Armor Collection. StuG III Ausf. D. In working order as of 1 July 2016. * WJHJ Collection, Belgium. StuG III Ausf. G. in full working order with original HL120 Maybach engine and drivetrain. *
Parola Tank Museum Parola Tank Museum, officially ''Armoured Vehicle Museum'' ( Finnish ''Panssarimuseo'') is a military museum located 110 kilometres north of Helsinki in Parola, near Hämeenlinna, Finland, a few kilometres from the Finnish Army Armoured Brigad ...
, Finland. One StuG III Ausf. G. in museum area and one in storage. * Histórico Militar de Cartagena, Spain. One StuG III Ausf. G in museum area. * Bastogne Barracks, Belgium. One StuG III Ausf. F/8 * American Heritage Museum, USA. One StuG III Ausf. G *
Schweizerisches Militärmuseum Full The Schweizerisches Militärmuseum Full is the Swiss military museum, located in Full-Reuenthal, canton Aargau. Collection The museum displays military hardware and uniforms of Swiss and foreign armed forces, mainly from World War II and the Co ...
, Switzerland, 1 Ausf. G. More or less intact, but not in working order * Musée des Blindés, Saumur France. Two StuG IIIs, a StuG III Ausf. G and a StuH 42. *
The Australian Armour and Artillery Museum The Australian Armour and Artillery Museum is a privately owned museum dedicated to tanks, armoured vehicles and artillery from the Second World War and post war periods. It was officially opened in 2014, in Cairns, Queensland, Australia. T ...
Two StuG III's - Ausf A (the only remaining Ausf A) and Ausf G * Kubinka Tank Museum, Russia. Ausf.G * Yad La-Shiryon Tank Museum, Israel. One StuG III Ausf. G. *
Belgrade Military Museum The Military Museum ( sr, Војни музеј, Vojni muzej) is a museum located in Belgrade, Serbia. Founded in 1878, the museum has over 3,000 ancient and modern items. These include Roman swords and helmets, Greek helmets and daggers, Serbi ...
, Serbia. One StuG III Ausf. F/8. *
The Wheatcroft Collection The Wheatcroft Collection in the United Kingdom is a large and important collection of historical softskin and armoured military vehicles. It is located in Leicestershire, England, and is one of the largest private collections of military vehicles ...
One StuG III Ausf. F/8 and one StuG III Ausf. G. *
The Tank Museum The Tank Museum (previously The Bovington Tank Museum) is a collection of armoured fighting vehicles at Bovington Camp in Dorset, South West England. It is about north of the village of Wool and west of the major port of Poole. The collection ...
,
Bovington Camp Bovington Camp () is a British Army military base in Dorset, England. Together with Lulworth Camp it forms part of Bovington Garrison. The garrison is home to The Armour Centre and contains two barracks complexes and two forest and heathland tr ...
, UK. Finnish StuG III Ausf. G, with
Zimmerit ''Zimmerit'' was a paste-like coating used on mid- and late-war German armored fighting vehicles during World War II. It was used to produce a hard layer covering the metal armor of the vehicle, providing enough separation that magnetically ...
, concrete armour, and logs for unditching. *
Parola Tank Museum Parola Tank Museum, officially ''Armoured Vehicle Museum'' ( Finnish ''Panssarimuseo'') is a military museum located 110 kilometres north of Helsinki in Parola, near Hämeenlinna, Finland, a few kilometres from the Finnish Army Armoured Brigad ...
, Finland. Two StuG III Ausf. G in museum area and three in storage. One cut open so public can see interior. Also 16 in various locations around Finland. * Museum of the Great Patriotic War, Moscow, Russia. Ausf.G * Museum of Slovak National Uprising,
Banská Bystrica Banská Bystrica (, also known by other alternative names) is a middle-sized town in central Slovakia, located on the Hron River in a long and wide valley encircled by the mountain chains of the Low Tatras, the Veľká Fatra, and the Kremnica ...
,
Slovakia Slovakia (; sk, Slovensko ), officially the Slovak Republic ( sk, Slovenská republika, links=no ), is a landlocked country in Central Europe. It is bordered by Poland to the north, Ukraine to the east, Hungary to the south, Austria to the ...
. Stug III Ausf. G, late production variant. * Arsenalen Tank Museum, Strängnäs, Sweden. One StuG III Ausf. D. *
Bundeswehr Military History Museum The Bundeswehr Military History Museum (german: Militärhistorisches Museum der Bundeswehr (MHMBw)) is the military museum of the German Armed Forces, the ''Bundeswehr'', and one of the major military history museums in Germany. It is located in ...
(''Militärhistorisches Museum der Bundeswehr''), Dresden, Germany. One StuG III Ausf. G. * National Museum of Military History, Sofia, Bulgaria. One StuG III Ausf. F/8. *
Parque y Centro de Mantenimiento de Sistemas Acorazados Parque is the Galician, Portuguese and Spanish word for "park", and may refer to: * Parque (TransMilenio), a metro station in Bogotá, Colombia * Parque (Lisbon Metro), in Portugal * Parque (Santurce), a subbarrio in San Juan, Puerto Rico * Jim ...
(PCMASA) nº 2 Segovia, Spain, 1 Ausf. G * Brigada de Infantería Acorazada "Guadarrama" XII (BRIAC XII), Spain, 1 Ausf. G. *
Brigada de Caballería ''Brigada'' (russian: Бригада), also known as ''Law of the Lawless'', is a Russian 15-episode crime television miniseries that debuted in 2002. It became very popular in Russia and ex-Soviet countries as well as Eastern Europe, but recei ...
“CASTILLEJOS II”, Spain, 1 Ausf. G. * Estonian Military Museum, Estonia, Tallinn. StuG III Ausf. G. * Overloon War Museum, Overloon, Netherlands. One StuG III Ausf. G.


See also

* Sturmgeschütz IV * ''
Panzerjäger ''Panzerjäger'' (German "armour-hunters" or "tank-hunters", abbreviated to ''Pz.Jg.'' in German) was a branch of service of the German Wehrmacht during the Second World War. It was an anti-tank arm-of-service that operated self-propelled a ...
'' *
Tank destroyer A tank destroyer, tank hunter, tank killer, or self-propelled anti-tank gun is a type of armoured fighting vehicle, armed with a direct fire artillery gun or missile launcher, designed specifically to engage and destroy enemy tanks, often ...


Tanks of comparable role, performance and era

* American M10 GMC * German
Hetzer The ''Jagdpanzer'' 38 ( Sd.Kfz. 138/2), originally the leichter Panzerjäger 38(t), known mostly post-war as ''Hetzer'', was a German light tank destroyer of the Second World War based on a modified Czechoslovakian Panzer 38(t) chassis. Germ ...
, StuG IV and
Jagdpanzer IV The ''Jagdpanzer'' IV, Sd.Kfz. 162, was a German tank destroyer based on the Panzer IV chassis and built in three main variants. As one of the casemate-style turretless Jagdpanzer (tank destroyer, literally "hunting tank") designs, it was develop ...
* Italian
Semovente da 75/34 The Semovente da 75/34 was an Italian self-propelled gun developed and used during World War II. It was a 75 mm L/34 gun mounted on a M15/42 tank chassis. It saw action during the defence of Rome in 1943 and later served with the Germans in ...
and Semovente da 75/46 * Romanian Mareșal * Soviet
SU-85 The SU-85 ('' Samokhodnaya ustanovka'' 85) was a Soviet self-propelled gun used during World War II, based on the chassis of the T-34 medium tank. Earlier Soviet self-propelled guns were meant to serve as either assault guns, such as the SU-122 ...


References


Sources

* Peter Mueller, Wolfgang Zimmermann: ''Sturmgeschütz III - Backbone of the German Infantry'
History Facts
* Walter J. Spielberger. ''Sturmgeschütz & Its variants'' - Schiffer Publishing - * * Military Intelligence Service. ''Artillery in the Desert'' (Special Series #6, MIS 416). Department of War, Washington, DC. 25 November 1942
Artillery in the Desert


External links



Photos of the Sturmgeschutz III at the Canada War Museum in Ottawa, Canada

* OnWar model specifications


Surviving Sturmgeschütz III and Sturmhaubitze 42 tanks
- A PDF file presenting the Sturmgeschütz III and Sturmhaubitze 42 tanks still existing in the world
StuG III Ausf.F/8 in Kubinka tank museum
{{DEFAULTSORT:Sturmgeschutz Iii World War II assault guns World War II tank destroyers of Germany Military vehicles introduced from 1940 to 1944 Tanks introduced in 1940