 In 1948, with demobilisation of Australia's wartime army complete, the decision was made to re-raise the part-time forces of the Militia, albeit with the new name of the Citizens Military Force, on a reduced establishment. The 27th Battalion was re-raised in May 1948, and was once again assigned to the 3rd Division, attached to the 9th Brigade. In 1951, the compulsory training scheme was reintroduced and as a result the size of many CMF units swelled. The march, The Campbells Are Coming, was approved as the battalion's regimental march in 1953. In 1959, the national service scheme was suspended, and as a result numbers dropped once more. Following the introduction of the Pentropic divisional structure in early 1960, the CMF was reorganised and a number of infantry battalions were disbanded or amalgamated together to form six new State-based regiments.
