Hmm... Is your sister knowledgeable in their care?

Depending on that answer, I'd say your best option (if you aren't emotionally attached) might be to either sell most of them (maybe just keep your favorite and have her look after it), or sell all of them and wait to buy more until you are out of the military. Moving will be a regular part of your life for a while, so you will need to consider whether or not having snakes will work for you for the next few years.