Often? Prove it. It happened without a doubt, but I think you're exagerating the frequency.
Alriiiight, let me gather names... sheesh!
My former landlord was one I'm personally familiar with. He was in the Army and married his sweetheart he'd met in England right after the war. He tells me stories (boy, he tells me stories!) of similar short courtships that resulted in life-long marriages ended only by death.