The Caesar Line was the last

German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...

line of defence in

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical re ...

before

Rome , established_title = Founded , established_date = 753 BC , founder = King Romulus (legendary) , image_map = Map of comune of Rome (metropolitan city of Capital Rome, region Lazio, Italy).svg , map_caption ...

during the Italian Campaign of the

Second World War 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 vast majority of the world's countries—including all of the great powers—forming two opposin ...

. It extended from the west coast near Ostia, over the Alban Hills south of Rome, from

Valmontone Valmontone is a ''comune'' (municipality) in the Metropolitan City of Rome in the Italian region Lazio, located about southeast of Rome. Geography The historic part of the town is situated on a tuffaceous hill, above sea level, part of a mor ...

Avezzano Avezzano ( or ; nap, Avezzàne, label=Neapolitan language, Marsicano ) is a city and ''comune'' with a population of 40,819 inhabitants, situated in the Abruzzo region, province of L'Aquila, Italy. It is the second most populous municipality in th ...

and then to

Pescara Pescara (; nap, label= Abruzzese, Pescàrë; nap, label= Pescarese, Piscàrë) is the capital city of the Province of Pescara, in the Abruzzo region of Italy. It is the most populated city in Abruzzo, with 119,217 (2018) residents (and approxim ...

on the

Adriatic The Adriatic Sea () is a body of water separating the Italian Peninsula from the Balkans, Balkan Peninsula. The Adriatic is the northernmost arm of the Mediterranean Sea, extending from the Strait of Otranto (where it connects to the Ionian Sea) ...

coast. Behind the western half of the line was a subsidiary line, the

Roman switch line The Roman switch line was a German line of defense during World War II in Italy branching off the Caesar C line and running north of Rome towards coast of the Tyrrhenian Sea. The next line was Trasimene Line in central Italy which was intended ...

which took a path north of Rome. When the Caesar C Line defences, manned by the German 14th Army, were breached by the U.S. Fifth Army on 30 May 1944, following the breakout from Anzio, the road to Rome was finally opened. The Germans retreated to their next line of defence, the

Trasimene Line The Trasimene Line (so-named for Lake Trasimeno, Lake Trasimene, the site of a major battle of the Second Punic War in 217 BC) was a Wehrmacht, German defensive line during the Italian Campaign (World War II), Italian Campaign of World War II. It ...

where the 14th Army re-aligned with the

German 10th Army The 10th Army () was a World War II field army of (Germany). A new 10th Army was activated in 1943 as part of Adolf Hitler's last stand, who saw action notably in late 1943 and early 1944 along the "Winter Line" at the Battle of San Pietro In ...

before withdrawing to the formidable defences of the

Gothic Line The Gothic Line (german: Gotenstellung; it, Linea Gotica) was a German Defense line, defensive line of the Italian Campaign (World War II), Italian Campaign of World War II. It formed Generalfeldmarschall, Field Marshal Albert Kesselring's la ...

See also