海軍兵学校體操體技賞章

Obverse 賞 - award reverse 海軍兵学校 - Naval Academy In the center 勝て兜の緒を締めよ = 勝って兜の緒を締めよう "After victory, tighten your helmet cords" i.e. even after a victory, prepare for the next battle and do not let your guard down. At the bottom 通信 - signaling/communication Case.