Question: what is the highest rank in the marine corps
Answer: Officer Company - grade officers Field - grade officers General officers Title ( Abbreviation ) Second lieutenant ( 2ndLt ) First lieutenant ( 1stLt ) Captain ( Capt ) Major ( Maj ) Lieutenant colonel ( LtCol ) Colonel ( Col ) Brigadier general ( BGen ) Major general ( MajGen ) Lieutenant general ( LtGen ) General ( Gen ) US DoD Pay Grade O - 1 O - 2 O - 3 O - 4 O - 5 O - 6 O - 7 O - 8 O - 9 O - 10 NATO Code OF - 1 OF - 2 OF - 3 OF - 4 OF - 5 OF - 6 OF - 7 OF - 8 OF - 9 Insignia Marine Service Uniform Insignia