This clip contains footage of the American military, consisting of National Guardsmen and regular army men, during its expedition into Mexico to find Pancho Villa before World War I. It begins with a WS of groups of troops exiting a building. A WS of a crowd watching troops leave. Trains of troops leaving. Shots of trains moving. Troops leaving the train cars. Soldiers waving at the camera. Troops on horseback. Troops on foot. A WS of a line of cannons. Shots of Brigadier General John J. Pershing. Shots of troops on horse back wielding sabers. Shots of rows of troops on horseback riding through the desert. Wide shots of troops on horseback riding down a hill into a valley. A shot of a military plane taking off. A WS of the plane in the sky. A POV from the pilot. A CU of the pilot. A WS of troops on foot entering a village. Shots of soldiers searching villages, talking to villagers. Shots of troops in the medical camp. A shot of a caravan of wagons leaving. Shots of the US army withdrawing from Mexico.