Like many finance issues, the mandate within in some services to use the government travel credit card (GTC) for a permanent change of station (PCS) move is confusing. As of May 2015, only the Army and Air Force are asking their troops to use the GTC during a PCS. And, although the Navy and Marine Corps were reported in late 2014 as working on making the change, they still aren't quite on board with it yet. But here's the catch: both the Army and Air Force only mandate use if you already have a card on hand. For more details, see this Questions and Benefits column.