A Vietnamese tour guide shows a fascinating guerrilla warfare trick that helped the country to defeat America. <br /><br />The slim man in green hat and top is seen disappearing inside a narrow tunnel before popping up behind the group ready to spring fire.<br /><br />The huge network of connecting tunnels is still found in the dense jungle surrounding the Cu Chi District of Ho Chi Minh City. <br /><br />Speaking to a group of tourists, the guide explains how Vietnamese forces would use the tunnels during combat. <br /><br />He explains in the background that leaves were scattered on the ground for camouflage before the soldier would squeeze into a tiny hold and close the lid on top of them to hide.<br /><br />Footage shows how the 'soldier' then reappears several yards behind the group where he could open fire undetected.<br /><br />Speaking in the video, the tour guide says: "The U.S. Special forces like GI Joes, when they come here, they're very nervous because they disappear in front of you and when they look behind, they reappear with a gun and shoot you, so it's everywhere. Nobody knows where he will appear again. That's why they're called guerrilla soldiers.'' <br /><br />The tunnel in the footage is only one of the immense network of connecting tunnels located in the Cu Chi District, which saw action during the war.<br /><br />The Cu Chi tunnels are part of a larger network of tunnels that underlie much of the region and foiled the Americans.<br /><br />The controversial Vietnam war, the second-longest in U.S. military history, lasted from November 1, 1955, until April 30, 1975.<br /><br />American forces eventually conceded defeat partly because they could not handle the Vietnamese soldiers' jungle warfare tactics.<br /><br />The footage was captured on September 14.
