[4] She was commissioned as an ordnance officer following her graduation from the United States Military Academy at West Point, New York, in 1994.

Upon graduation from the University of Virginia in 2004, she was assigned as an instructor, then associate professor, in the Department of Systems Engineering at West Point, New York.

Her next assignment was at Fort Carson, Colorado, where she served as the 242nd Ordnance Battalion (EOD) executive officer with deployment to Afghanistan in support of Operation Enduring Freedom.

In 2010, she was selected for command of the Special Troops Battalion (STB) of the 3rd Sustainment Brigade, Fort Stewart, Georgia and deployed in support of the Iraq War.

In 2013, Hoyle attended Senior Service College at the Dwight D. Eisenhower School for National Security and Resource Strategy at Fort McNair, Washington, D.C. She then served as deputy chief of staff for prevention programs in 4th ID prior to commanding the 71st EOD Group at Fort Carson, Colorado.