The sad part is this and the fact that many probably have families and some young children. If you have ever been around deploying or redeploying troops and see some of these children saying goodbye to their parent, it is heart wrenching. Much of my military contractor time and civil service time at Sill was deploying troops after 9/11. I helped units prepare their equipment for movement, load their equipment on trains, plains, and ships out of several ports around the US. Also, I would lead buses that were picking up soldiers to go to the local airports to fly out to the middle east. The hardest part for me was when spouses and children (especially the children) would start crying and trying to get to their mother or father. I had to turn away on several occasions and just get in my government truck (lead vehicle) and wait until the buses were loaded and then we would take them to the airport, manifest the unit for the contracted flight, load the plane, and then send them out.
I was divorced when I deployed during the Gulf War, but my sons (twins) were there when I left and when I returned. It is one of the hardest things to do of all military life.