Both soldiers, joined by a third man, were drinking alcohol and watching football at the time of the Sunday night incident, authorities said.
“The victim had the hiccups. The suspect pulled out a gun to scare him in order to stop the hiccups,” said spokesman Carroll Smith of the Killeen, Texas, Police Department.
Pfc. Patrick Edward Myers, 27, was charged on Tuesday with manslaughter, and Justice of the Peace Garland Potvin set his bond at $1 million, police said.
Killed was Pfc. Isaac Lawrence Young, 22, of Ash Grove, Missouri, a motor transport operator at the Army base, the military said. Young entered active duty in May 2011 and arrived at Fort Hood in October 2011, the Army said.
Myers is a soldier at the base, as was Young at the time of his death, said Fort Hood spokesman Chris Haug.
Police responded to a shooting shortly after 10 p.m. Sunday and found a man shot in the face and two other men at the residence, Killeen police said.
Myers allegedly “produced a handgun and while handling it in an unsafe manner, discharged the handgun striking the victim in the face,” police said.
Young was pronounced dead during the ambulance transport to Skylark Field, where he had been scheduled for an airlift to a hospital, authorities said.
Young received the National Defense Service Medal and Army Service Ribbon, the military said.