In 1916 Carrick, recently married and newly become a father, joined the Royal Garrison Artillery and served on the Western Front.
Many of the sculptors of the period were of an older generation. Those of Carrick's own generation often served in the war as officers, often in theatres such as Italy and Egypt. By contrast Carrick, as a humble gunner experienced the war of the Western Front at first hand. He was elected an Associate of the Royal Scotish Academy while still at the front in 1918 and his sketch book from this year still survives.