In addition, the 1st Siege battery equipped with 9.2 in. howitzers fought with 1st Bde, Cdn Garrison Artillery, Cdn Corps Heavy Artillery. Interwar period A formation was authorized on March 15, 1931, as the '7th Toronto Regiment, CA'. It was redesignated: '7th (Toronto) Regiment, CA' on October 1, 1933; '7th (Toronto) Regiment, RCA' on June 3, 1935; '7th (Reserve) (Toronto) Regiment, RCA' on November 7, 1940; and '7th (Reserve) (Toronto) Group, RCA (CA)' on October 1, 1942; converted and redesignated 'Royal Canadian Artillery, 2nd Division' on April 1, 1946; and 'Royal Canadian Artillery, 2nd Armoured Division' on June 19, 1947. The formation was disbanded on October 1, 1954. World War II In World War II, 9 battery fired both 25 pdrs and 105mm SP, with 3rd Field Bde, 11th Army Field Regt, 1st Canadian Corps Artillery, both in Italy, where at one time they were part of the 8th Army, the "Desert Rats", and later in Northwest Europe as part of the 1st Canadian Army Artillery. 15 battery became part of the 7th Anti-Tank Regt and saw action with 2, 6, and 17 pdrs and the M-10 SP 3 in. 23 battery served with both 1st and 5th Med Regts firing 6in. how. And 5.5 gun while 25 battery with similar weapons served with 18th Fd Regt and 2nd Med Regt, 1st AGRA. Both 30 and 53 batteries became LAA batteries with 40mm Bofors, one with 6 LAA Regt, 2nd Corps Artillery and the other with 4th Fd Regt, 3rd LAA Regt, 2 Div and 11th LAA Regt. Throughout World War II a reserve regiment was maintained in Toronto to recruit and train replacements for the batteries overseas. Post World War II-1965 Following the end of World War II, Headquarters RCA, 2nd Div was set up in Toronto with 29th Fd Regt, 32nd Fd Regt, 42nd Med Regt, 49th HAA Regt, and 69th Survey Regt all located within Toronto. In 1947 reorganization saw the loss of the 49th HAA, the 69th became an Observation Regt while the designation SP was added to the 29th and 32nd Regts. In 1950 the 1st Anti-Aircraft Gun Operations Room was established. The next reorganization in 1954 saw the loss of the 32nd Fd and the 1st AAOR. The 69th became the 1st Locating Regt with 134 Svy & Rad battery and 208 Loc battery. In May 1951, the 27th Canadian Infantry Brigade Group was