He was a National Serviceman in 1955 and subsequently a member of the Citizens Military Forces.

Between 1933 to 1936, Wrigley was an active member of the Citizens Military Force.

In 1948, the Citizens Military Force was re-raised, albeit on a limited scale.

Following the completion of the demobilisation process, the Citizens Military Force was reformed in 1948, albeit on a reduced scale.

Following the end of the war, the 2nd Battalion was re-raised as part of the Citizens Military Force in 1948.

In 1948, the battalion was re-raised as part of the Citizens Military Force, based around Canberra.

He served as a member of the Citizens Military Force from 1948 to 1964.

Before his involvement in politics he was a commercial fisherman, and served in the Citizens Military Force 1961-1965.

Pearce Barracks was used for Citizens Military Force and school cadet training.

Australia transferred many to Citizens Military Force units.