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WWII On This Day: April 11

What happened on April 11 during World War II? This date brings together 5 events from 1941 and 1945, with period photographs and links to the full operations documented across WW2 Theatres.

1941
New Zealand infantry and Matilda tank crews meeting outside Tobruk during Operation Crusader, photographed 2 December 1941.
Captain Geoffrey Keating / No. 1 Army Film & Photographic Unit · Imperial War Museums E 6918 · UK Government public domain
Tobruk and Operation Crusader

Axis forces encircle Tobruk

After the withdrawal from western Cyrenaica, the Australian 9th Division and attached British and Indian units held the old Italian fortress perimeter. German and Italian troops cut the main land routes to the port by 10–11 April. Tobruk was now inside the Axis advance, but still in Allied hands. Its harbour gave the defenders a sea supply route from Egypt. The Axis advance towards the frontier meanwhile had to bypass the fortress and could not use the port as a supply base. Holding the wire meant denying Rommel a transport…

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A German Panzer IV of the 11th Panzer Division advancing into Yugoslavia in April 1941.
Bundesarchiv Bild 101I-770-0280-20 · CC BY-SA 3.0 DE · Source
Invasion of Yugoslavia, April 1941

Italian Second Army enters Yugoslavia

Italian Second Army formations crossed the northeastern Italian frontier on 11 April, after the German breakthroughs had already destabilised Yugoslav positions in Slovenia and Croatia. Italian objectives included the occupation of areas along the Adriatic and the extension of control into Slovenia, Croatia and the Dalmatian approaches. Yugoslav units in the west were withdrawing through a command system already disrupted by the Zagreb political collapse and German mobile operations. The Italian advance added another active front and reduced the territory through which Yugoslav formations could regroup. Large groups surrendered as…

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Invasion of Yugoslavia, April 1941

Hungarian forces cross the northern frontier

Hungarian Third Army formations crossed into northern Yugoslavia on 11 April, entering Bačka and Baranja after the German offensive had broken the Yugoslav strategic position. Budapest framed its intervention around Hungarian territorial claims and the political dissolution of Yugoslavia. For the Yugoslav First Army, the new attack added pressure from the north while German forces were already advancing through Croatia, Slavonia and the Banat. Hungarian occupation of the northern territories further narrowed Yugoslav freedom of movement and contributed to the rapid disappearance of a continuous defensive front in the north.

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Invasion of Yugoslavia, April 1941

German mobile troops reach Pančevo

XLI Panzer Corps advanced from Romania through the Banat and reached Pančevo, directly across the Danube from Belgrade, on 11 April. The German approach from the northeast formed one arm of a convergence already developing from Kleist’s advance up the Morava valley and from Second Army formations driving from the northwest. Destroyed bridges limited an immediate large-scale crossing from Pančevo, but the capital’s remaining approaches were being closed. Belgrade’s defence was now shaped less by a single front than by the arrival times of several German columns. Small detachments looked…

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1945
A German nurse and a U.S. Army medic treat a wounded German soldier captured during the battle for Unna, 11 April 1945; the archival caption misidentified him as SS.
A German nurse and a U.S. Army medic treat a wounded German soldier captured during the battle for Unna, 11 April 1945; the archival caption misidentified him as SS. U.S. Army Signal Corps / NARA · Public domain Source
The Ruhr Pocket

The defence contracts into towns and roadblocks

By 11 April the continuous German front had broken into defended towns, roadblocks and local groups. At Unna, Ninth Army troops fought through a prepared position while other formations bypassed or compelled the surrender of smaller strongpoints elsewhere in the pocket. Local groups could still combine tanks, assault guns, 20 mm flak weapons and Panzerfausts to inflict casualties at short range. Their resistance delayed individual columns, but the larger command network was fragmenting as American forces advanced from several directions.

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