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
11th Armoured Division (United Kingdom) later invaded Germany. It was disbanded in January 1946 and reformed towards the end of 1950. In 1956, it was converted into the 4th Infantry Division. During the German invasion of Poland in September 1939 and in operations against the Western Allies on the Western Front in May−June 1940, the German armoured formations demonstrated what some observers felt were dramatically improved new tactics, leaving the Allied forces with a perceived need to address these developments. The continued evolution of the Royal Armoured Corps was the answer for the British Army. The 11th Armoured Division was organized in March 1941, in