If you are on active military duty, including the reserves, you may not have to make student loan payments while you are deployed.
Contact your loan holder to inform them about your current (or approaching) active duty status and find out what deferment options are available. Be prepared to provide your loan holder with a copy of your military orders. Even if your student loans are not yet in repayment, you must take action. Otherwise your loans may go into repayment while you are away.