Senjinkun military code
The Instructions for the Battlefield (Kyūjitai: 戰陣訓; Shinjitai: 戦陣訓, Senjinkun; Japanese pronunciation: [se̞nʑiŋkũ͍ɴ]) was a pocket-sized military code issued to soldiers in the Imperial Japanese forces on 8 January 1941 in the name of then-War Minister Hideki Tojo. It was in use at the outbreak of the Pacific War.