sentences:  Hashimoto testified in the court on 13 December in a crowded courtroom.It was the first time that an officer of a nation at war with the United States had testified against an officer of the U.S. Navy in a court martial.At the behest of Cady, Hashimoto took both a Japanese civil oath and a U.S. Navy oath and so he could be charged for perjury in both nations if he lied.