US citizenship possibly. After three years or so of marriage they can leave them and have a whole new life in a better country. It's a small price to pay. There is the possibility they really love these GI which would make for a happy ending. I hope it is the latter.
"Both soldiers had served in the regular Army before joining the National Guard. Blackwell was discharged last year and planned to attend Pensacola Junior College but was called up with the Guard before classes began in January, his mother said.
Blackwell has two young daughters, one from a previous marriage, the other out of wedlock, McKee said. Each is residing with her respective mother.
Dagen, a marine engine mechanic in civilian life, has never been married, said Gwen Tuton, a cousin and Walnut Hill neighbor."
A good marine engine mechanic can make a lot of money, although I'm not sure how good this guy is.
... But an American woman would never marry a man for material gain. /sarcasm ;-)