The 42nd Field Artillery Regiment (Lanark and Renfrew Scottish), RCA is a Canadian Army Reserve artillery regiment based in Pembroke, Ontario. It is part of the 4th Canadian Division's 33 Canadian Brigade Group. Allocated batteries 35th Field Battery, RCA Lineage 42nd Field Artillery Regiment (Lanark and Renfrew Scottish), RCA Originated 5 October 1866 in Brockville, Ontario, as the 42nd "Brockville Battalion of Infantry" Redesignated 1 December 1897 as the 42nd "Lanark and Renfrew" Battalion of Infantry Redesignated 8 May 1900 as the 42nd Lanark and Renfrew Regiment Redesignated 12 March 1920 as The Lanark and Renfrew Regiment Redesignated 15 July 1927 as The Lanark and Renfrew Scottish Regiment Redesignated 7 November 1940 as the 2nd (Reserve) Battalion, The Lanark and Renfrew Scottish Regiment Redesignated 15 September 1944 The Lanark and Renfrew Scottish Regiment (Reserve) Converted 1 April 1946 to air defence artillery and redesignated as the 59th Light Anti-Aircraft Regiment (Lanark and Renfrew Scottish), RCA Converted 1 December 1959 to infantry and redesignated as The Lanark and Renfrew Scottish Regiment Converted 10 November 1992 to artillery air defence and redesignated as the 1st Air Defence Regiment (Lanark and Renfrew Scottish), RCA Converted 2006 to field artillery, retaining its designation. Redesignated 26 January 2011 as the 42nd Field Artillery Regiment (Lanark and Renfrew Scottish), RCA Lineage chart History In 1930 the regiment was granted the following battle honours for the Great War. These honours became dormant when the regiment converted to artillery, being replaced by the RCA's honorary distinction . The regiment did not initially mobilize for the Second World War during the general activation of units beginning in August 1939. The 1st Battalion, The Lanark and Renfrew Scottish Regiment, CASF was mobilized on 5 March 1942, and served as part of the Canadian Army's Atlantic Command in a home defence role. On 15 October 1943, The 1st Battalion, Lanark and Renfrew Scottish Regiment was disbanded. In July 1944, the 5th Canadian (Armoured) Division perceived it was deficient in infantry. The 12th Canadian Infantry Brigade was created out of units already in existence. One unit of the new brigade was the Motor battalion of the division, a second was a re-equipped reconnaissance battalion from the 1st Canadian Infantry Division, and a third unit was created from anti-aircraft assets, no longer required due to Allied aerial superiority. This unit petitioned The Lanark and Renfrew Scottish for permission to use their name and