The last Su-11s left front-line service around 1983 in aviation.

He was an elderly man, long past front-line service and held the Gestapo in great fear.

CC1 had a relatively short career and was never used in front-line service.

By 1895, she was withdrawn from front-line service and used for fishery protection.

U-37 was then withdrawn from front-line service and assigned to training units until the end of the war.

It was removed from front-line service by 1938, but remained in secondary and support roles.

Priority to front-line services may mean the ending of support for community groups in some areas.

After their withdrawal from front-line service in 1942 the Ki-32s were used in a training role.

However, in 1951 all Seafires were withdrawn from front-line service.

They were withdrawn from front-line service between 1936 and 1937.