Sentence:  “I don't know how you and the ‘<WSD>head</WSD>,' as you call him, will get on, but I do know that if you call my duds a ‘livery' again there'll be trouble. It's bad enough to go around togged out like a life saver on a drill day, but I can stand that 'cause I'm paid for it. What I won't stand is to have them togs called a livery....” 
Meaning of the word marked with <WSD> tags:  Leader; chief; mastermind.