Alfred Michael Forrester enlisted into the 18th London Regiment Territorial Army on 9 April 1935.
On 18 May 1935 he enlisted into the Royal Ulster Rifles. The Brigade was re-designated as the 1st Airlanding Brigade in 1941, to undertake assault by glider.
Sergeant Forrester attended Parachute Training Course number 27 at RAF Ringway between 14 and 24 September 1942.
He was then transferred to the Essex Regiment in April 1943 with an emergency commission as 2nd Lieutenant.
In February 1944 Lieutenant Forrester was transferred back to The Parachute Regiment and saw service in the Far East. He also served with a Pathfinder Platoon.
Captain Forrester was demobilised in 1948.