Completed the following sentence: Dreben's wanderings then took him to Central America, along with two other soldiers of fortune and machine gun experts, Tracy Richardson and Emil Lewis Holmdahl. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ It was in Guatemala that he suffered his only combat wound <unk> a shot in the back.<unk> It was in Guatemala that he suffered his only combat wound <unk> a shot in the rear. <unk> <unk> <unk>
Mexican Revolution, Dreben joined the forces of Francisco Madero as a machine gunner. After Madero's murder in 1913, Dreben worked for Felix A. Sommerfeld in El Paso, smuggled arms to Pancho Villa's forces, and went on sabotage missions in Mexico for Sommerfeld's secret service. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Dreben<unk>served as a scout and became good friends with the expedition's commander, General John Pershing. The Americans were never able to catch the elusive Villa, and the fiasco eventually came to an end in 1917.