The 3rd Medium Regiment, Royal Canadian Artillery was raised as a medium artillery regiment of the Canadian Army on January 26, 1942. Formed in Petawawa, Ontario, it was made up of two former coastal batteries, the 5th from the west coast and the 87th, from the east coast.

History

The regiment was equipped with the 5.5-inch medium gun/howitzer later converting to the 4.5-inch (Canadian Specification)version of the same artillery piece. In March 1942, the 3rd Medium was assigned to I Canadian Corps

I Canadian Corps

I Canadian Corps was one of the two corps fielded by the Canadian Army during World War II. From December 24, 1940 until the formation of the First Canadian Army in April 1942, there was a single unnumbered Canadian Corps...

 in England; in July 1944 the unit was transferred to II Canadian Corps

II Canadian Corps

II Canadian Corps was a corps-level formation that, along with I Corps and I Canadian Corps , comprised the First Canadian Army in Northwest Europe during World War II.Authorization for the formation of the Corps headquarters became effective in England on...

for service in Northwest Europe. It was later assigned to the 1st Canadian Army level of command under 2 Army Group RCA (2nd AGRCA). The 3rd Medium Regiment, RCA, was disbanded on November 16, 1945.