 On 1 June 1940 it amalgamated with the 26th Field Battery, RCA, CASF and was redesignated as the 26th/53rd Field Battery, RCA, CASF.On 1 January 1941 this amalgamation ceased and it was redesignated as the 53rd Field Battery, RCA, CASF and as the 53rd Light Anti-Aircraft Battery, RCA, CASF the same day.It provided light antiaircraft artillery support as part of the 11th Light Anti-Aircraft Regiment, RCA, CASF, in Great Britain.