... that odd couple being Lon Chaney and William Haines.
Haines plays "Skeet" Burns, a young guy whose plan was just to hitch a free train ride to San Diego with a voucher from the Marines since they think he is going to join up there, when he really plans to just go to Tijuana for the races. He has no intention of becoming a marine. But he does come back from Tijuana, looks a bit envious of the comradery he sees on the Marine base, and does indeed join up.
From that point he's at odds with marine lifer sergeant O'Hara (Lon Chaney), in one of his few MGM roles where he is not monster or blackguard of the week. Burns has a problem with rules, as do all William Haines characters, and worse, he falls for Navy nurse Norma Dale (Eleanor Boardman) who happens to be the woman of O'Hara's dreams. Worse, O'Hara is the kind of guy Norma thinks she should love, but Burns gets under her skin in spite of his abrasive foolhardy ways.
This film is charming and entertaining with a rousing battle for a finale, but it does have its faults and plot holes. It does realistically portray the rivalry between the navy and the marines, right down to nurse Dale being insulted when Burns innocently asks her if she is a Marine nurse. She harshly barks back that she is a navy nurse! The film avoids getting claustrophobic by having the marines deploy overseas for an extended period, where Burns both gets in hot water and proves himself.
Chaney's commanding presence and ability to convey deep emotions shine through his portrayal of the hardened but compassionate Sergeant O'Hara. His performance is a testament to his status as one of the greatest actors of the silent film era. Lon Chaney was named an honorary marine for his performance, and his funeral was officiated by a marine chaplain. I'd definitely recommend this one. It doesn't make the mistake of so many MGM films and abruptly make an out of character right turn at the end just so there can be a happy ending.
