FORT LEAVENWORTH, Kan. (AP) - The Army has scheduled the execution date for a former Fort Bragg, N.C., soldier who was convicted of multiple rapes and murders. Ronald A. Gray, a former cook, is scheduled to be executed Dec. 10 at the Federal Correctional Complex in Terre Haute, Ind. Army Secretary Pete Geren ordered that Gray be executed by lethal injection. President Bush approved Gray's execution in July. Gray is being confined at the U.S. Disciplinary Barracks at Fort Leavenworth. He was convicted in connection with a spree of four murders and eight rapes in the Fayetteville, N.C., area between April 1986 and January 1987 while he was stationed at Fort Bragg. The last military execution was in 1961 when John Bennett, an Army private convicted of raping and attempting to kill an 11-year-old Austrian girl, was hanged.