Pfc. Carl T. Stovall had pleaded not guilty in the March 2009 shooting of Hungarian laborer Tibor Bogdan near Camp Taji, just north of Baghdad. Bogdan was shot while digging a hole at the camp.
The shooting came less than a month into Stovall's third deployment to the Middle East.
He opted to be tried by a military judge at Fort Hood.
A statement issued by the military post on Saturday says the court ordered Stovall to receive a psychiatric/psychological evaluation before a post-trial hearing set for Nov. 10. Stovall faced a maximum sentence of life without the possibility of parole.