Anzio

The Allies opened Operation Shingle on 22 January 1944, landing near Anzio and Nettuno behind the German Gustav Line. The landing achieved surprise: British and American troops took their first objectives and advanced inland, while Allied aircraft and naval forces supported the operation. U.S. VI Corps, commanded by John P. Lucas, held the beachhead as German forces began moving toward the coast. The Allies did not immediately drive for the Alban Hills or Rome, and instead consolidated their position. ([U.S. Army Center of Military History](https://history.army.mil/Portals/143/Images/Publications/Publication%20By%20Title%20Images/C%20Img/campaigns-wwii/pdf/3.pdf); [World War II Database](https://ww2db.com/battle_spec.php?battle_id=313))

German reinforcements formed a defensive ring around the bridgehead. Allied attacks toward Cisterna and Campoleone began on 30 January but failed to achieve their objectives. In February the Germans pushed the British out of Aprilia (the Factory) on 9 February, and on 16 February opened Operation Fischfang down the Via Anziate. It drove the Allies back to their final beachhead line at the Flyover, about 11 km from Anzio, before Allied counterattacks on 19 February pushed it back. A last German attack, against the U.S. 3rd Division near Cisterna on 29 February, also failed. Lucas was relieved on 22 February and replaced by Lucian Truscott; the front then settled into a prolonged defensive struggle. ([National WWII Museum](https://www.nationalww2museum.org/war/articles/last-ride-anzio-german-counterattacks-february-1944); [World War II Database](https://ww2db.com/battle_spec.php?battle_id=313))

The Allies strengthened the beachhead while German artillery and repeated attacks kept pressure on its positions. Reinforcements included the U.S. 34th Infantry Division from March, the British 5th Division, which relieved the 56th in March, and the U.S. 36th Infantry Division, which landed on 22 May. German formations included the 4th Parachute Division, 65th Infantry Division, and 3rd Panzergrenadier Division, among others. The bridgehead remained in Allied hands, but its narrow perimeter and the surrounding high ground made movement and supply dangerous. ([Anzio order of battle](https://en.wikipedia.org/wiki/Anzio_order_of_battle); [Battle of Anzio](https://en.wikipedia.org/wiki/Battle_of_Anzio))

On 23 May, the Allies began a major offensive from the beachhead. U.S. divisions attacked toward Cisterna and the Velletri gap while the British 1st and 5th Divisions made holding attacks on the left flank. German divisions resisted the breakout, but the Allies captured Cisterna on 25 May and pushed through the perimeter, and that morning beachhead engineers met II Corps troops advancing from the south. The offensive opened routes inland and ended the months-long confinement of the beachhead. ([World War II Database](https://ww2db.com/battle_spec.php?battle_id=313); [Anzio Breakout – May 1944 Battle Map](https://www.battlearchives.com/products/anzio-breakout-battle-map))

The advance continued toward Rome. Allied forces encountered German resistance around the Velletri gap and the Caesar C Line, while German formations withdrew northward. On 25 May, Mark Clark ordered VI Corps to shift its main attack north-west toward Rome, leaving a smaller force to continue toward Valmontone. Allied troops entered Rome on 4 June; Britannica gave the battle’s end date as 5 June. The Allies had broken out of the Anzio bridgehead and captured the principal objective, although German forces escaped north and continued the campaign. ([World War II Database](https://ww2db.com/battle_spec.php?battle_id=313); [Britannica](https://www.britannica.com/event/Battle-of-Anzio))