Editor's Note: This article originally appeared on Business Insider.

British soldiers from the Grenadier Guard shared a video on Twitter showing the excruciating consequences to not having adequate battlefield awareness during training.

In the video, a gaggle of soldiers equipped with SA80 rifles are seen carrying a troop on a litter during a simulated mock casualty evacuation, when one of the soldiers inadvertently walks into a sharp broken branch protruding from the ground.

A groan can be heard as onlookers, including the soldiers providing security, look toward the soldier, who falls backward.

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U.S. Marine Corps photo

With a little witty repartee over the radio, the Allies first major offensive in the Pacific during World War II came to a close as American forces secured Guadalcanal on Feb. 9, 1943.

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