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WWII On This Day: June 20

What happened on June 20 during World War II? This date brings together 2 events from 1942 and 1944, with period photographs and links to the full operations documented across WW2 Theatres.

1942
British and Commonwealth prisoners gathered near Tobruk following its surrender, June 1942.
Koch / Bundesarchiv Bild 183-B21459 · CC BY-SA 3.0 DE

The Axis assault breaks into Tobruk’s perimeter

An air and artillery attack opened the battle on 20 June. German and Italian infantry, engineers and armour attacked the south-eastern sector, broke through and rapidly exploited the opening. Several units defending the perimeter continued fighting, but the penetration threatened internal roads and command positions. By evening Axis troops had entered Tobruk and reached important installations. The defenders' chance of reorganising a coherent line had narrowed, and the town was increasingly separated from Eighth Army forces retreating east.

Continue in Gazala and the Fall of Tobruk →
1944
An advanced landing ground at Saint-Pierre-du-Mont, Normandy, June 1944.
An advanced landing ground at Saint-Pierre-du-Mont, Normandy, June 1944. US Army Air Forces 342-FH-3A18988 · NARA · Public domain Source
Operation Overlord

The outer ring of Cherbourg reached

VII Corps closed up to the landward fortifications of Cherbourg, a belt of forts, ditches and pillboxes built to face inland. A formal demand for surrender was broadcast and refused. Inside the perimeter, German engineers had already begun the systematic destruction of the port they had been ordered to deny to the Allies.

Continue in Operation Overlord →