Know your down payment options and how much you can afford to put down. If you can't afford a down payment and you're eligible for a VA Loan then you're in luck because VA loans do not require down payments (unless your lender requires it). If you don't qualify for a VA Loan make sure to research other federal and state loan assistance programs before getting a "low down payment mortgage product" or borrowing from friends or family.
If you think your next assignment is going to require your family to move then you need to consider the advantages and disadvantages of renting out your home or selling it.
It is also important to note that the VA loan is designed for the purchase of a primary residence not a vacation home.
Research your mortgage loan options and determine which type of loan is best for you. A loan officer from Veteran Home Loans can help you determine if a VA loan or conventional mortgage product is best.