U.S. Marine sergeants Quirt and Flagg are inveterate romantic rivals on peacetime assignments in China and the Philippines. In 1917, W.W. I brings them to France, where Flagg, now a captain, takes up with flirtatious Charmaine, inn-keeper's daughter. Of course, Quirt has to arrive and spoil his fun. But the harsh realities of war and the threat of a shotgun marriage give the two men a common cause...

Two Marines are sent to South Sea island where they fight over a local island girl.

In this comedy, a pair of ex-Marines team up and get involved in a nightclub. Trouble ensues when they both fall in love with a feisty woman and begin fighting over her.

Marines Flagg and Quirt fought together in WWI and Panama. After some time in New York they go to Sweden and compete for the love of Else. Next they go to Nicaragua and help earthquake victims. Then to Egypt where Else is now in Prince Hassan's harem.