Obverse
討伐参加記念 - Subjugation/suppression [of guerrillas https://en.wikipedia.org/wiki/Pacification_of_Manchukuo] participation commemoration

Reverse
贈 - Gift
昭和十年秋 - Autumn of 1935
討伐参瞻楡県 - Janyu county (Lungkiang province) [bandit] suppression participation
See https://ja.wikipedia.org/wiki/瞻楡県