On 3 November, the division was renamed the 6th Infantry Division. The division initially commanded rear area personnel and the 22nd Infantry Brigade. Over the coming months, the 14th and 16th Infantry Brigades were assigned to the division as they arrived in Egypt from Palestine. On 10 June 1940, Italy declared war upon Britain and her allies. Seven days later, the 6th Infantry Division was dissolved and its headquarters transformed into the command staff of a corps known as the Western Desert Force (WDF). In early September 1940, Italian forces based in Libya invaded Egypt. Three months later, the WDF began a limited raid, Operation Compass. The raid succeeded and was expanded; in two months the WDF advanced , occupied the Italian province of Cyrenaica and destroyed the Italian 10th Army. The operation was halted in February 1941 to give priority to the Battle of Greece.