Welcome to HubPages Denise.
I'm a Canadian Forces officer, but I think Americans call it M16 assault weapon training.. ;o).
Kidding aside, there are special techniques that our specialist teams are taught but modern soldier very seldom need to resort to hand-to-hand combat. That said, the discipline and fitness requirements of martial arts are beneficial no matter what you do in life.
Jiu Jitsu is my favourite because it combines various martial arts techniques in a way that makes it great for self defense in any situation, with or without weapons. It may not be pretty but it is very effective.