A military jury has sentenced Maj. Nidal Hasan to death for killing 13 people during the 2009 shooting rampage at Fort Hood.
Hasan never denied being the gunman and has said the attack on unarmed soldiers was motivated by a desire to protect Muslim insurgents fighting in Iraq and Afghanistan.
Because he did not dispute the allegations, the trial has been primarily a pursuit of the death penalty.
The same jury that sentenced him to death Wednesday also found him guilty last week in the attack, which also wounded more than 30 people at the Texas military base.
Military prosecutors believed that any sentence short of death would deny justice to the families of the dead and the survivors who had believed they were safe behind the gates of the Texas base.
Before an execution date is set, the sentence will face years, if not decades, of appeals.