Canada's Permanent Force shrank during the interwar period.  The Permanent Force included the RCHA Brigade (A, B and C Batteries), a medium battery, coastal batteries, and artillery schools.

The Reserve Army was small but active during the interwar period.  The Royal Regiment started the process of going mechanized.  The 3^rd Medium Battery, RCA, in Kingston was the first unit mechanized, receiving four 6-wheeled Leyland tractors in 1929.

During the 1920s and 1930s, the RCHA musical horse drive was famous.  Four 6-horse teams, with their guns and limbers, galloped through a maze of patterns.  MGen J. H. Roberts led the last musical horse drive in Winnipeg in 1933.

Defence spending increased during the 1930s, but not at a rapid pace.  It was not until the late 1930s that Canada started to rearm.