Frank Pierce joined the RCMP reserve in 1937 and when war broke out in 1939 he joined the No.1 Provost Company of the Canadian army.
The Provost Company was a unit formed from members of the RCMP. Frank and his company arrived in the UK in late 1939. He served in Sicily and Italy as a member of the 1st Canadian Infantry Division from 1943 to 1945.
Frank had left his childhood sweetheart, Helen back home in Swift Current, Saskatchewan when he went overseas in 1939. He did not see her again for six years, until he returned in 1945. They were married in September 1946 and eventually had five sons.
Frank remained in the RCMP until March 1948 when he enrolled at the University of Saskatchewan and was later admitted to the school of Dentistry where he graduated in 1953. He practiced in Swift Current until 1972 then moved the practice to Wetaskiwin where he remained until 1983. Afterwards Frank and Helen retired to B.C.