Here’s what it takes to guard the ‘Tomb of the Unknown Soldier’

Every year, approximately 4 million people travel to Arlington National Cemetery to pay their respects to the men and women who paid the ultimate sacrifice defending our great country. Most gather in solemn awe at the historic site of "The Tomb of the Unknown Soldier" standing atop a hill overlooking Washington, D.C.

If you plan your visit accordingly, you may get to witness the awesomeness that is the changing of the guard, which occurs every 30-minutes during the hot summer and every hour during the cold winter.

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In April of 1948, the 3rd US Infantry Regiment proudly took on the responsibility of guarding the tomb 24-hours day. Being a sentinel guard isn't just about walking back and forth keeping a close eye out, it takes professionalism, honor, and most importantly commitment as one must volunteer for the role.

Prospects are hand-selected after volunteering and undergo either a 2 or 4 week TDY to learn rifle precision, uniform maintenance, and marching, as well as to, memorize seven pages of knowledge. Verbatim.

On average, 60% of the hopefuls will not graduate, but those who do complete the training will move on and become "Newman".

Newmans assist sentinels prior to guard changes, maintain their uniforms, and must endure three more tests before earning their future position. The entire training takes six to nine months and has a fail rate of 90%.

Sentinels stand a 27-hour guard shift, walking their post a dozen times. Contrary to popular belief, they are allowed to verbally discipline tomb visitors.

Check out 3d U.S. Infantry Regiment's video for more behind the scenes of what it take to guard the tomb.