The members of the Yukon Field Force returned from Dawson City in July 1900 and others that were not utilized during the Boer War formed a skeleton A & B Battery.  The former C Battery Permanent Force members that had returned from the Boer War were amalgamated into the two Batteries.  On 1 May 1901 A & B Batteries were re-designated the ‘Royal Canadian Field Artillery Brigade’ in Kingston.

In the summer of 1905 the Petawawa Camp was established as the main artillery training centre for eastern Canada.  During this summer the principles behind indirect fire acquired during the Boer War were utilized for training.  Until that time the 12 pdr RBL Gun with a range of 5.1 km was being used only in a direct fire capacity.  At the end of the first summer on 1 September 1905 the RCFA Brigade was re-designated the ‘Royal Canadian Horse Artillery Brigade’.  Petawawa was only used as a summer camp with the RCHA returning to Kingston for winters.

In September 1906 A & B Batteries separated and the Royal Schools of Artillery was set apart from the Batteries, which to this point contained them.  A & B Batteries kept the “Horse” designation the schools and all other artillery organizations were referred to as “Field” units.  Also during this time, B Battery moved to the Stanley Barracks in Toronto for the winters until September 1908.

In 1906 the 12 pdr RBL began to be phased out of the RCHA Brigade.  1912, being replaced by the 18 pdr QF Gun Mk II/III and 13 pdr QF Gun Mk I was also added in 1912.  The cycle of wintering in Kingston and conducting summer training camps in Petawawa continued until the summer of 1914.