British Armoured formations of World War II In April 1939, the Mobile Division was renamed the 1st Armoured Division and the Mobile Division (Egypt) was named the Armoured Division (Egypt) on the outbreak of war, before being renamed the 7th Armoured Division on 16 February 1940. Following the outbreak of war, the headquarters of the 2nd Armoured Division was activated on 15 December 1939. The first troops, however, were only attached to the division in the following month and then in part from forces released from the 1st Armoured Division following a divisional reorganisation. During 1940, a further three armoured divisions were formed; the 6th Armoured Division
1st Armoured Division (India) Lorried Infantry Brigade away with the Punjab Boundary Force. The wartime 255th Indian Tank Brigade had previously been redesignated in June 1946 as 1st Armoured Brigade and assigned to 1st Armoured Division. The division played a major role in Operation Polo, the integration of Hyderabad into the Indian Union in 1948. During this time Major General Joyanto Nath Chaudhuri was serving as the division's commander, and he served as Military Governor of the state in the immediate aftermath of the invasion. For the Hyderabad operation, the division controlled the 1st Armoured Brigade and the 7th and 9th Infantry Brigades. The