text: can i get a medical waiver for one branch of the military if i was denied from another branch? u.s. marines did not grant me a waiver for a past knee injury.  wondering if i could still get into the u.s. army. its possible, depending how serious the knee injury was, and what type of range that you have currently. also if you can pass their physical fitness standards. i would try, the worst they can tell you is no.   i would also try some of the other brances that require less strenuous phsyical standards, such as the navy or the air force. good luck