exchange letter (noun) correspondence: communication by writing
Sinonime: GI, Green Beret, airforce member, cadet, cavalryperson, commando, conscript, draftee, enlisted person,
fighter,
guard, guerrilla, gunner, infantry, infantryperson, marine,
mercenary, military person, musketeer,
officer, paratrooper,
pilot,
private,
rank,
recruit,
scout, selectee, serviceperson, soldier, soldier-at-arms, trooper,
veteran,
volunteer, warmonger,
warrior