Agarn

3 clues
F Troop corporal
Corporal on 'F Troop'
F Troop" corporal played by Larry Storch
Similar answers:
Aagonizes
Aarnio
Aaverage
Aaverages
Abag
Abagofnerves
Abarn
Abeverage
Aboutaguywhoisa
Aboverage
Abovetheaverage
Acage
Acamouflagesuit
Acarnameddesire
Acceptedusage
Accompaniedstag
Accraghana
Acebandage
Acebandages
Aconcagua