On 24 October 1919, he was granted a short service commission as a Flying Officer.

On 8 July 1960, he transferred from the national service list to a short service commission.

Wallens joined the Royal Air Force on a short service commission in 1937.

He also took a short service commission in the Guards for a year between school and university.

In January 1939 he joined the Royal Air Force on a short service commission.

On 5 December 1919, he was granted a short service commission as a Flying Officer.

Might ah suggest a short service commission.

In June 1938 he applied for a four year short service commission and was provisionally accepted in November.

He commenced a short service commission in November 1936.

On 9 March 1960, he transferred to a short service commission in the regular army.