7th Armoured Brigade (United Kingdom) in February 1940. The 7th Armoured Division had a red jerboa (a nocturnal rodent indigenous to North Africa) as its emblem and became known as 'The Desert Rats'. The 7th Armoured Brigade, meanwhile, had a green jerboa as its emblem. The 7th Brigade became known as the 'Green Rats' or the 'Jungle Rats' after it moved to Burma in 1942. The Second World War broke out in September 1939, with both Britain and France declaring war on Germany after the German Army invaded Poland. Italy launched an invasion of British-controlled Egypt shortly after entering the war on Germany's side in
7th Infantry Division (United Kingdom) September 1939). 7th Division HQ then moved to Mersa Matruh on 4 September, taking over all troops in the area except The Armoured Division. The Division was redesignated the 6th Infantry Division on 3 November 1939, and became HQ Western Desert Force in 1940. Commanders have included: 7th Infantry Division (United Kingdom) The 7th Infantry Division was an infantry division of the British Army, first established by The Duke of Wellington as part of the Anglo-Portuguese Army for service in the Peninsular War, and was active also during the First World War from 1914–1919, and in the Second World War