a squad leader的用法和样例：
- The squad leader was a vividly drawn character.
- Light Infantry Squad: 4 rifleman and a squad leader with machine gun, anti infantry.
- Don't send arty in when a squad is in a location unless the squad leader asks for it and they have cover.Check Twice, fire once.
- Did you mention this to the squad leader?
- a squad leader of the Young Pioneers