After completing high school in Orleans, France, in 1965, Charles Humble returned to the United States to join the United States Army.  Following Advanced Individual Training in the Infantry, he was selected to serve as an instructor in the 6th Army's Committee Group training troops in combat arms, achieving the rank of Sergeant.  He served in this position until he was honorably discharged in 1968.

Charles then joined the Indianapolis Police Department where he served as a patrol officer, field investigator, and motorcycle officer.  During his five years with the Indianapolis P.D., Charles performed as an exceptional officer and, among other awards and Citations, he received the department's Commendation for Outstanding Devotion to Duty from then Mayor Richard Lugar.  While off duty, Charles had spotted three individuals wanted by the FBI for murder and single-handedly captured all three without any loss of life. 

Mayor Lugar was later elected to the United States Senate where he still serves as one of the most senior members.