Pete Holmes has pointed out several issues with the tactics other Street Fighter characters use, but there was no need to even go that far with one look at Guile's military qualifications.

One might wonder what war Guile could have fought in, and the answer is apparently "he didn't." I went to double check this on the Street Fighter wiki, and found the far more interesting theory that Guile uses military-grade hairspray to keep up his famous flat top.

Street Fighter Red Tape: Guile [Pete Holmes]