Osumi had arranged that their word should be 'kane' to tell their side from the enemy's side, and during the battle, his soldiers had to say the word to each met soldier and they knew their side hearing the response of 'kane.'
小隅は敵味方の識別のため、「金（かね）」を合言葉とし、刀を交えるとき必ず「金」と言わせ、「金」と答える者を味方とした。