noun
platoon commander; section commander
Military rank for the leader of a 小隊 (platoon/section).
彼は小隊長として部下を指揮した。
He commanded his subordinates as a platoon commander.
小隊 is the platoon or section itself, while 小隊長 is the commander of that unit.
Compound of 小隊 (platoon/section) and 長 (leader/chief).