Royal Canadian Artillery. The RCA is generally the militia or reserve branch of the RCHA (Royal Canadian Horse Artillery). There are some anti aircraft regiments but must regiments use 105mm howitzers which are towed by trucks.

A gun crew of four or more is usually used, in the RCA any gunner should be proficient at any position. Athough a towed howitzer of this small size would rarely be used in war (at least a 155mm tracked artillery vehicle would be used as the RCHA uses), the M105s are excellent training pieces; rugged and somewhat crude but can instill good gunnery skills on young recruits.