Sentence:  Air Force Chief of Staff General Hoyt S. Vandenberg explained to a House Appropriations subcommittee why the Air Force prefers suspenders: “A battle jacket with <WSD>belted</WSD> trousers is an unsightly appearing garment. Every time you lean over your shirt sticks out in back...” 
Meaning of the word marked with <WSD> tags:  Fitted with a belt.