55 and 56 Batteries were redesignated as 155 and 156 Batteries on 21 May 2016.
Lineage
75th (British Columbia) Heavy Anti-Aircraft Regiment, RCA
Originated 12 October 1883 in Victoria, British Columbia as the British Columbia Provisional Regiment of Garrison Artillery
Redesignated 7 May 1886 as the British Columbia Brigade of Garrison Artillery
Redesignated 1 January 1893 as the British Columbia Battalion of Garrison Artillery
Redesignated 1 January 1895 as the 5th "British Columbia" Battalion of Garrison Artillery
Redesignated 28 December 1895 as the 5th "British Columbia" Regiment of Garrison Artillery, CA
Reorganized 1 July 1896 into 1st Battalion and 2nd Battalion, the 5th "British Columbia" Regiment of Garrison Artillery, CA
2nd Battalion was detached 1 August 1899, converted to infantry and redesignated the 6th Battalion Rifles . The 1st Battalion designation was automatically discontinued.
Redesignated 1 July 1925 as the 5th Coast Brigade, CA
Redesignated 3 June 1935 as the 5th Coast Brigade, RCA
Redesignated 7 November 1940 as the 5th Coast Brigade, RCA
Redesignated 1 April 1946 as the 5th Coast Regiment, RCA
Redesignated 5 February 1948 as the 5th Heavy Anti-Aircraft Regiment, RCA
Redesignated 29 September 1949 75th Heavy Anti-Aircraft Regiment, RCA
Amalgamated 17 October 1954 with the 5th Coast Regiment, RCA, the 120th Heavy Anti-Aircraft Battery, RCA and the 8thAnti-Aircraft Operations Room, RCA, and redesignated as the 5th West Coast Harbour Defence Battery, RCA
Redesignated 25 October 1956 as the 5th Independent Medium Battery, RCA, with the 120th Harbour Defence Troop, RCA ceasing its amalgamation
Redesignated 25 April 1958 as the 5th Independent Medium Battery, RCA
Redesignated 12 April 1960 as the 5th Independent Medium Artillery Battery, RCA
Reorganized 13 September 1991 as a regiment and redesignated as the 5th Field Artillery Regiment, RCA
5th (British Columbia) Coast Regiment, RCA
Originated 28 October 1948 in Victoria, British Columbia as the British Columbia Coast Regiment, RCA
Redesignated 29 September 1949 as the 5th Coast Regiment, RCA
Amalgamated 17 October 1954 with the 75th Heavy Anti-Aircraft Regiment, RCA, the 120th Heavy Anti-Aircraft Battery, RCA, and the 8th Anti-Aircraft Operations Room, RCA
Converted 1 March 1939 to artillery and redesignated as the 17th Searchlight Battery, RCA
Redesignated 7 November 1940 as the 17th Searchlight Battery, RCA
Redesignated 1 April 1946 as the 8th Anti-Aircraft Gun Operations Room, RCA
Redesignated 30 June 1951 as the 8th Anti-Aircraft Operations Room, RCA
Amalgamated 17 October 1954 with the 5th Coast Regiment, RCA, the 75th Heavy Anti-Aircraft Regiment, RCA, and the 120th Heavy Anti-Aircraft Battery, RCA
