Army War College Graduation Badge https://asiamedals.info/forums/army-war-college-graduation-badges.640/.
1st variation.
Obverse
Japanese guards unit emblem
reverse
近衛歩兵第一聯隊 - 1st Guards Infantry Regiment
在隊記念 - Military Service Commemorative
guardsbadgedesignedafterwarcollegebadge
imperial japanese army badge
japanese guard unit watch fob
japanese guards regiment badge
japanese guards unit badge
在隊記念章
近衛師團在隊記念章
近衛歩兵第一聯隊在営記念章