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).
In 1938, the unit was reorganized at Geelong as 4th Anti-Aircraft Battery RAA(M). In 1948, it continued to exist as Regimental Headquarters and P Battery, 2nd Light Anti-Aircraft Regiment RAA, which was later transformed into 2nd Heavy Anti-Aircraft Regiment RAA in 1951 and received the title (City of Geelong) in 1953. The unit was renumbered 8th Heavy Anti-Aircraft Regiment RAA (City of Geelong Regiment) in 1955.