Members of the military are tough. They're also insanely supportive.

In this video which has gone viral Army Capt. Sarah Cudd wills herself to finish off a 12-mile road march at New Jersey's Fort Dix while fellow soldiers cheer her on.

Cudd is down on her knees, experiencing a kind of fatigue we regular citizens can't even begin to fathom.

She had to complete the 12-mile run in under three hours in order to receive the Army's Expert Field Medical Badge.

Cudd was one of 46 people who earned the EFMB, which certainly sounds like a lot, but keep this in mind: 80% of soldiers who competed failed, putting Cudd in some pretty elite company.