A really interesting story about the widow of a soldier who died in Iraq who had his baby posthumously. They were facing infertility before his deployment, so they froze his sperm to be on the safe side. She now has a healthy baby boy who bares a striking resemblance to his father.
It also sounds like freezing sperm prior to deployment is quite popular amongst soldiers. Not as an attempt to leave their wives with an opportunity to have babies should they not return- but ensure that they can start a family after their return due to some of the harmful chemicals and conditions they are exposed to.