FORT WORTH, Texas — The Army psychiatrist charged in the worst mass shooting on a U.S. military installation will be tried in a military court and face the death penalty if convicted, Fort Hood's commanding general announced Wednesday.

Maj. Nidal Hasan is charged with 13 counts of premeditated murder and 32 counts of attempted premeditated murder in the November 2009 shooting spree on the Texas Army post.

A military judge has not been named in the case, and it was not immediately clear when Hasan will be arraigned in a Fort Hood courtroom. He must plead not guilty because it is a death-penalty case, according to military law.

Lt. Gen. Donald Campbell's decision for Hasan to face a military trial and the death penalty came as no surprise and echoed the recommendations of two Army colonels who also reviewed the case.

"I believe the Army as an institution has long been planning to go this route," Hasan's lead attorney John Galligan told The Associated Press on Wednesday from his office near Fort Hood, about 125 miles south of Fort Worth.