In 1938 the unit was reformed at Geelong as 4th Anti-Aircraft Battery RAA(M). In 1948 this unit was perpetuated as Regimental Headquarters and P Battery, 2nd Light Anti-Aircraft Regiment RAA, being converted to 2nd Heavy Anti-Aircraft Regiment RAA in 1951 and having the title (City of Geelong) conferred in 1953. In 1955 it was renumbered 8th Heavy Anti-Aircraft Regiment RAA (City of Geelong Regiment).
The unit underwent a reorganization at Geelong in 1938, becoming 4th Anti-Aircraft Battery RAA(M). It continued to exist as Regimental Headquarters and P Battery, 2nd Light Anti-Aircraft Regiment RAA, before being transformed into 2nd Heavy Anti-Aircraft Regiment RAA in 1951. The unit received the title (City of Geelong) in 1953 and was later renumbered 8th Heavy Anti-Aircraft Regiment RAA (City of Geelong Regiment) in 1955.