Complex sentence: Hawke started his service in the U.S. Army in 1982 on active duty as a Radio Operator (05B), Telecommunications Operator (31C), and Radio Repairman (31V).
Split into simpler sentences: Hawke started his service in the U.S. Army in 1982. On Active Duty as a Radio Operator (05B), Telecommunications Operator (31C), and Radio Repairman (31V).