See related suggested listed below for more info.
US dollar coins are being stored. They are not circulating. Dollar coins are cheaper in the long run than paper one dollar bills.
Have the PX, BX, comissary, Marine exchange, clubs in the Morale and Welfare system, etc. Start each day with a specifiec minimum of dollar coins in their "bank", "drawer", "tray" or what ever the enterprise calls the money availalbe at the begining of the day. They will have to use them up for change since they will get the same minimum the next day.