Fall Achse

Operation Achse (german: Fall Achse, lit=Case Axis), originally called Operation Alaric (), was the codename for the German operation to forcibly disarm the Italian armed forces after Italy's armistice with the Allies on 3 September 1943.

Several German divisions had entered Italy after the fall of Benito Mussolini in July 1943, while Italy was officially still an ally of Germany, despite the protests of the new Italian government under Pietro Badoglio. The armistice was made public on 8 September. German forces moved rapidly to take over the Italian zones of occupation in the Balkans and southern France, and to disarm Italian forces in Italy.

Some Italian troops, with no orders from superiors, and hampered by many desertions, resisted the Germans. Most notably on the Greek island of Cephalonia, where 1,315 Italian soldiers were killed in action against the Germans and over 5,100 prisoners of war of the 33rd Infantry Division "Acqui" were summarily executed by the German Army after running out of ammunition and surrendering. In Rome, with the royal family and the government having fled, a disorganized defense by Italian troops of the capital was unable to defeat a German attack. Additionally, individual soldiers or whole units, like the 24th Infantry Division "Pinerolo" in Thessaly, went over to the local resistance movements. Only in Sardinia, Corsica, Calabria and in the southern part of Apulia were Italian troops able to offer successful resistance and hold off the Germans until relieved by the arrival of the Allies.

German plan

The first German combat units were sent to Italy to bolster its defenses against a probable Allied attack on Italian soil. Germany and Italy were still allies. The decision to create German units in Italy was made during the final phase of the Tunisian campaign; on 9 May 1943, two days after the fall of Tunis to the Allies, the German High Command ( OKW) informed the Italian Supreme Command ('' Comando Supremo'') that three new German units would be formed, mostly employing second-line German units evacuated from North Africa. They would be the Sardinia Command (later 90th Light Infantry Division), the Sicily Command (later 15th Infantry Division), and a "ready reserve". Adolf Hitler wrote to a dubious Benito Mussolini that since they were weak units that needed reinforcements, two additional German divisions would be sent from France. The 1st Fallschirm-Panzer Division Hermann Göring arrived mid-May 1943 and was sent to Sicily, and the 16th Panzer Division arrived in early June and was sent west of Bari. On 19 May also, the headquarters of general Hans Hube's XIV Panzer Corps was also sent from France to strengthen the command structure of the Commander-in-Chief South (''Oberbefehlshaber Süd''), Field Marshal Albert Kesselring.

On 20 May 1943, during a prolonged discussion at his headquarters, Hitler expressed his doubts about the political stability of the Fascist government and the danger of a collapse of his Italian ally. A report by the German diplomat Konstantin von Neurath found declining morale among the Italian population and pro-British sentiment spreading through the professional classes and the military. Hitler was convinced that the situation in the Mediterranean needed great attention, and a detailed plan had to be prepared for a collapse of Italy or an overthrow of Mussolini. More reports about a speech delivered by the Italian diplomat Giuseppe Bastianini, information from Heinrich Himmler's men in Italy and the presence in Sicily of General Mario Roatta, who was considered untrustworthy, strengthened Hitler's suspicions.

On 21 May, Field Marshal Wilhelm Keitel, the head of the OKW, issued guidelines developed to respond to the possible defection of Italy from the Axis. The plan envisioned a series of operations in different theaters: Operation Alarich, the invasion of the Italian mainland; Operation Konstantin, the neutralization of the Italian forces in the Balkans; Operation Siegfried, occupation of the Italian-occupied areas in Southern France; Operation Nürnberg, to guard the France–Spain border; Operation Kopenhagen, to control the passes on the France–Italy border.

Meanwhile, German reserves kept being redeployed to face potential threats in the Mediterranean theater. Hitler, seriously worried about the Balkans and in conflict with the Italian leadership and Mussolini himself because of collaboration agreements between the Italian and local partisan forces, decided to send the 1st Panzer Division to the Peloponnese and even considered sending to Italy his three elite Waffen-SS armored divisions, then deployed on the Eastern Front for Operation Citadel.

On 17 June Mussolini, after a partial refusal, urgently asked for two German armoured divisions, as a reinforcement to confront the powerful Allied forces. After more arguments caused by another change of mind by Mussolini and by a proposal by General Vittorio Ambrosio, the Chief of Staff of the Italian armed forces, to turn down German reinforcements and to move to Italy the Italian troops deployed in France and the Balkans, the ever-deteriorating situation (during Operation Corkscrew, Pantelleria had surrendered without resistance on 11 June) induced Hitler to send three more German divisions: the 3rd Panzergrenadier Division, the 29th Panzergrenadier Division (both newly reconstituted in France after their destruction at Stalingrad), and the 26th Panzer Division. The last of them was deployed at Salerno on 9 July. The 29th Panzergrenadier Division was sent to Foggia in mid-June and the 3rd Panzergrenadier Division was deployed north of Rome in the first days of July. Meanwhile, on 24 June, the ''Reichsführer-SS'' Brigade had been moved to Corsica, and in mid-July, the command of the 76th Panzerkorps (General Traugott Herr) also arrived.

Transfer of German forces to Italy

From the invasion of Sicily to the fall of Fascism

The Allied invasion of Sicily began on 10 July 1943, and established solid beachheads, despite Italian and German counterattacks. The political and military leaders of the two countries reacted immediately to the worsening situation. In Rome, Ambrosio urged unrealistic demands for help from Germany on Mussolini. Among the German commanders in Italy, Eberhard von Mackensen and Albert Kesselring became increasingly skeptical about Italian defense capabilities, and asked for reinforcements.

Hitler, more and more worried about an Italian collapse, decided to send the 1st Fallschirmjäger-Division to Sicily immediately, and then sent the headquarters of XIV Panzer Corps (under General Hube) and the 29th Panzergrenadier Division, ready for deployment, to Reggio Calabria. On 17 July, Hitler decided to meet with Mussolini and his collaborators, and assess their resolve to continue the war.

The meeting was near Feltre on 19 July 1943. On the same day, Rome was attacked by over 500 Allied bombers, which accelerated maneuvers by monarchists, high military officers, and even part of the Fascist leadership, more and more concerned with finding a way out of the war. The Feltre meeting accomplished little. Despite pleas by Ambrosio to present Italy's critical situation clearly and to ask for freedom of action to withdraw from the war, Mussolini was weak and indecisive and only asked for more German help in the defense of Italy, while Hitler made an exhausting speech in favor of fighting till the end. Moreover, Hitler gave an optimistic view of the situation and refused the sweeping Italian requests for more land and air support, mentioning technical and operative difficulties. But also, he did not heed the vehement requests of Jodl, Keitel, and Warlimont: to create an unified command in Italy under German control, to move the many Italian troops in northern Italy south (towards the regions attacked by the Allies), and to give command of the Axis forces in the theatre to General Wolfram von Richthofen.

After the meeting, Hitler was convinced that he had lifted Mussolini's morale. Field Marshal Erwin Rommel had been put in charge of forces being organized in Bavaria for intervention in case of Italy's defection ("Operation Alaric"). Rommel was worried about the fate of German troops in Sicily and southern Italy, who would be cut off from Germany by an Italian "betrayal". But Hitler ignored warnings from Rommel. On 21 July, Hitler decided to suspend the planning of "Alaric" and to send German reinforcements to Italy. The codename "Alaric" was later quietly changed to "Achse" to avoid offending the Italians ( Alaric was the Visigothic king who sacked Rome in 410).

On 25 July, before he learned of the fall of Mussolini, Hitler sent six Heer (Army) divisions to Italy, including a Panzer division, and three Waffen-SS divisions. Rommel and his headquarters (then in Munich) were sent to Thessaloniki to control a new army group in the Balkans.

German countermeasures after 25 July

Hitler and the German leadership were thus taken by surprise by the fall of Mussolini on 25 July; due to wrong information from the ambassador Hans Georg von Mackensen and by the military ''attaché'' Enno von Rintelen, who did not foresee that the meeting of the Grand Council of Fascism would threaten the Fascist regime, and instead thought that Mussolini would be able to strengthen collaboration with Nazi Germany. The news of the fall of Mussolini and the creation of a military government led by Marshal Pietro Badoglio surprised and enraged Hitler, who immediately understood that, despite assurances by Badoglio and Italian diplomats, the change of regime was a prelude to an Italian defection, which would endanger the German forces fighting in Southern Italy and the entire Wehrmacht presence in Southern Europe.

At first Hitler thought about intervening immediately with the forces already on site to occupy Rome and arrest Badoglio, the king and the members of the new government; however he soon changed his mind and, together with Jodl and Rommel (who had been urgently recalled from Greece) he decided to re-activate the planning of Operation "Alarich", to create a detailed plan to react to the Italian defection and swiftly occupy the Italian peninsula, after sending enough reinforcements. Kesselring was told to be ready to the change of sides and to prepare the withdrawal of his forces from Sicily, Sardinia and Southern Italy; new directives were issued, with new operational plans.

In a matter of few days, the "Siegfried", "Konstantin", and "Kopenhagen" plans (ready since May) were confirmed, and new operations were studied: "Schwartz" to capture the Italian government in Rome, "Achse" to capture the Italian fleet, "Eiche" to free Mussolini from captivity, and "Student" to capture Rome. On 28 July, Hitler reviewed the operational planning: the "Konstantin" and "Alarich" plans were combined into a single plan for the occupation of Italy and the Balkans, which was called "Achse". On 5 August, on the advice of Admiral Ruge and because of the strengthening of the Italian defenses of Rome, the "Schwartz" plan was abandoned. Another problem for Hitler and the German leadership came from a lack of detailed information about Mussolini's fate and the refusal of Victor Emmanuel III to meet Hitler, which would have been an occasion for a sudden attack on the new Italian leadership.

While the planning was under way, the Wehrmacht command had begun the transfer of the divisions needed to enact operations when the Italians defected. Starting on 27 July, the 2. Fallschirmjäger-Division of General Hermann-Bernhard Ramcke was moved by air from Southern France to the Pratica di Mare Air Base, a move that surprised both the Italian commands and Kesselring, as neither had been warned beforehand. Meanwhile, on 31 July, General Kurt Student (commander of the 11th Airborne Corps, and due to take command of Ramcke's paratroopers) and SS- Hauptsturmführer Otto Skorzeny reached Kesselring in Frascati and outlined the "Schwarz" plan for him. This was however soon cancelled by Hitler.

Meanwhile, at 12:00 on 26 July Rommel had returned from Thessaloniki to Rastenburg, leaving command of the new Army Group F to Field Marshal Maximilian von Weichs, and on 29 July he assumed command in Munich of a fake command, denominated ''Auffrischungsstab München'', to hide the creation of a new army group which on 14 August would be moved to Bologna under the name of Army Group B, and would enact Operation "Achse" in Northern Italy.

At 02:15 on 26 July the 215th Infantry Division was the first German unit to enter Italy, heading for Liguria, while the Panzergrenadier Division Feldherrnhalle and the 715th Infantry Division were deployed to protect the passage through the alpine passes on the French–Italian border. The Italian commands protested and tried to stop the inflow of the divisions with some pretexts, but Kesselring intervened through the Italian Supreme Command on 1 August, and the 305th Infantry Division marched on foot first to Genoa and then to La Spezia. Meanwhile, more German units entered Italy: the 76th Infantry Division, on 2 August, heading for Savona; the 94th Infantry Division, on 4 August, heading for Susa and then Alessandria; the 87th Corps headquarters (General Gustav-Adolf von Zangen), which on 11 August established itself in Acqui and assumed command of the three newly-arrived German divisions.

Some conflicts and incidents between the German troops on passage and the Italian commands and units took place also at the Brenner Pass; Rommel, worried by the news of a strengthening of the Italian garrison and mining of the mountain passes, sent the Kampfgruppe Feuerstein south, with part of the 26th Panzer Division and the 44th Infantry Division, with orders to say that they had been sent to help Italy against the common enemy. The Italian Supreme Command in Rome and General Gloria, commander of the XXVI Italian Army Corps in Bolzano, complained vehemently and threatened an armed reaction, but after Kesselring's intervention on 1 August the crisis passed and the German units were allowed to proceed; the 44th Infantry Division reached Bozen, assumed control of the Brenner Pass and thus ensured the transalpine communications with Germany.

Right after July 25, Hitler had initially decided to immediately send to Italy the 1st SS Panzer Division Leibstandarte SS Adolf Hitler and the 2nd SS Panzer Division Das Reich, despite the precarious situation on the Eastern Front. Protests by Field Marshal Von Kluge and further worsening of the situation in the East forced however Hitler to send only the Leibstandarte Adolf Hitler, without its heavy weapons. This division crossed the Brenner Pass on 3 August and then placed itself between Parma and Reggio Emilia. This was soon followed by the transfer of the 65th Infantry Division from Villach to the Ravenna– Rimini area, and the transfer of the 24th Panzer Division from Tyrol to Modena by 30 August. On 3 August the Waffen-SS Generaloberst Paul Hausser arrived in Reggio Emilia with the headquarters of the II SS Panzer Corps, to take command of the three incoming divisions.

The last German division to enter Italy was the 71st Infantry Division, which was transferred from Denmark to an area north of Ljubljana on 7 August, and from 25 August started entering Friuli on orders from Rommel, who feared possible hostile actions by the Italians and the mining of the Eastern alpine passes. After another conflict with the Italian Supreme Command, which once again menaced to result in armed clashes, the situation was solved by the intervention of Von Rintelen, and the Division advanced without problems towards Gemona, Gorizia, and Opicina; by 2 September it was fully deployed in the Julian March.

8 September 1943

End of an alliance

Right after the removal of Mussolini from power, the new government led by Badoglio had officially proclaimed the decision to continue the war alongside Germany and kept reassuring the German leadership of its loyalty to the Axis cause, but at the same time it started a series of confused attempts to start secret negotiations with the Allies, to get out of the war and to avoid the consequences of a sudden change of sides. The need to gain time induced the new Italian government to make a show of loyalty to the alliance, asking for a more active participation of the German ally in the defense of the Italian Peninsula and thus for the arrival of more German divisions, which however worsened the German threat to Italy.

The Italian leadership tried to keep a grip on this difficult phase by alternating requests for help and obstructionism towards the incoming German forces and requests to deploy the German divisions in the South, on the frontline; already on 31 July, during the meeting between Ambrosio and Kesselring, arguments began about the positioning and role of the new German divisions. At the conference held in Tarvisio on 6 August between the Italian Foreign Minister Raffaele Guariglia, Ambrosio, Joachim von Ribbentrop and Keitel (with the menacing presence of SS guards), the mutual distrust became apparent; Ambrosio asked to increase the German divisions from nine to sixteen, but to deploy them in Southern Italy against the Allies, while Keitel and Warlimont instead stated that the new German units would be deployed in Central and Northern Italy, as a strategic reserve force.

A last meeting was held in Bologna on 15 August, between generals Roatta and Jodl, the latter accompanied by Rommel (who had just been made commander of the new Army Group B in Northern Italy) and by a SS guard of the ''Leibstandarte Adolf Hitler''; the Germans consented to recalling to Italy part of the 4th Italian Army from Southern France, but they were alarmed by Roatta's plans about a positioning of the German forces that, in case of defection, seemed to expose them to the risk of becoming isolated and being destroyed by the Allies. The meeting was a failure and convinced the German generals that, despite reassurances from Roatta (possibly not yet informed by Ambrosio of the contacts that were under way with the Allies), who assured that Italy would not defect and added "we are not Saxons!", that an Italian defection was imminent. The atmosphere at the meeting was so tense that the German delegation refused food and beverages offered by the Italians, fearing they would be poisoned.

The preparations against an Italian betrayal therefore proceeded swiftly; detailed dispositions were issued to the subordinated commands, which in turn studied detailed operative plans to act with speed and efficiency. The German leadership expected only weak resistance by the Italian armed forces and counted on quickly solving the situation. General Von Horstig, a representative of the weaponry office of the Wehrmacht in Italy, was already preparing plans for the plunder of the resources and the systematic destruction of factories and infrastructures of military importance in Southern Italy. At the end of August, Hitler sent to Italy his new representatives: the diplomat Rudolf Rahn (who replaced the ambassador Von Mackensen) and General Rudolf Toussaint, who replaced Von Rintelen as military attaché.

Kesselring had already authorized General Hans Hube (in command of the XIV Panzer Corps), on orders from OKW, to organize the withdrawal of his four divisions from Sicily and its redeployment in Calabria, which Hube skillfully carried out on 17 August (Operation Lehrgang). The vast majority of the German troops in Sicily, after an effective fighting retreat, managed to cross the Straits of Messina and even to save a great part of the heavy equipment. In the following days Hube deployed the XIV Panzer Corps (16th Panzer Division, 15th Panzergrenadier Division, and Hermann Goring Division) in the area between Naples and Salerno, while the 1st Parachute Division was sent to Apulia and General Herr with the 76th Panzerkorps assumed the defense of Calabria with part of the 26th Panzer Division and the 29th Panzergrenadier Division; his orders were to carry out delaying actions in case of Allied attack across the straits.

On 3 September, indeed, XIII British Corps of the Eighth British Army under General Bernard Law Montgomery crossed the straits northwest of Reggio Calabria ( Operation Baytown), landed without meeting much resistance and started a cautious advance along the coastal roads towards Pizzo Calabro and Crotone. The 76th Panzerkorps avoided engagement and slowly retreated northwards.

The armistice

After some unrealistic and fruitless attempts by personalities of minor importance (embassy official Blasco Lanza D'Ajeta, Foreign Ministry official Alberto Berio, industrialist Alberto Pirelli) to contact the Allies and start negotiations for an exit of Italy from the war, possibly avoiding the dangerous consequences of a surrender at discretion and a German occupation, on 12 August General Giuseppe Castellano, Ambrosio's counselor, left Rome for Madrid, where he met the British ambassador Sir Samuel Hoare. The latter informed Churchill and then directed Castellano to Lisbon where, on 17 August, the first meeting with the Allied emissaries, General Walter Bedell Smith and political advisers Kenneth Strong and George F. Kennan, took place. The Allies' demands, definitively established by the Allied governments at the end of July, called for a completely unconditional surrender; Castellano thus found himself in great hindrance, as the instructions Badoglio had given him required to bargain the exit of Italy from the war and a strong military collaboration with the Allies, including the intervention of as many as fifteen British and American divisions that were to make contemporaneous landings north and south of Rome simultaneously with the announcement of the armistice, in order to defend the capital and deal with the German reaction. During a new meeting between Castellano and Bedell Smith in Cassibile, Sicily, on 31 August, the Italian envoy unsuccessfully insisted again to be made a part of the Allied operative details; the intervention of an American airborne division to protect Rome and the Italian government (Operation Giant 2) was agreed. On 1 September, after a consultation between the king, Guariglia and Ambrosio, the Allies were radioed the reception of the conditions of the armistice.

On 3 September, Castellano and Bedell Smith therefore signed the Armistice of Cassibile, in presence of the representatives of the British and American governments, Harold Macmillan and Robert Daniel Murphy; there was however a grievous mistake about the timing of the announcement of the Italian surrender. The Badoglio government hoped to gain more time to organize the resistance against the German forces, delaying the announcement at least till 12 September. Only in the night of 8 September did Badoglio learn from General Maxwell Taylor (the second-in-command of the 82nd Airborne Division, whose intervention was planned for "Giant 2", who had been secretly sent to Rome) that General Dwight Eisenhower would make the announcement that very evening. Badoglio protested and vainly tried to obtain another delay; the Italian leaders and generals, extremely worried about the German reaction, made an awful impression on General Taylor, who advised the Allied command to give up Operation "Giant 2", which he deemed to be destined to fail, given the disorganization of the sizable Italian forces stationed around Rome.

In the morning of 8 September, Allied bombers bombed Kesselring's headquarters in Frascati. While they failed their objective and caused heavy civilian casualties, the Allied fleets approached the Gulf of Salerno to launch Operation Avalanche (the main landing of the 5th American Army of General Mark W. Clark). Badoglio, more and more anxious, sent Eisenhower a telegram asking for a deferment of the announcement of the armistice. The Allied commander-in-chief, sustained by an order from Washington of the Allied heads of state, firmly rejected the request, confirmed his intentions in a threatening tone, and cancelled Operation "Giant 2".

At 18:00 on 8 September a hurried and dramatic Council of the Crown was held at the Quirinale Palace; the king, Badoglio, Ambrosio, Guariglia, General Giacomo Carboni (head of the Military Intelligence Service and commander of the Corpo d'Armata Motocorazzato

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