Major Forshee was commissioned in the United States Marine Corps on December 18, 2008, upon graduating from Texas A&M University with a Bachelor of Science in Geology through the Platoon Leaders Course. Upon completion of The Basic School, he reported to NAS Pensacola, FL for flight training, earning his wings as a Naval Aviator on May 12, 2012.

Upon successful completion of the MV-22B Fleet Replacement Squadron, Marine Medium Tiltrotor Training Squadron 204, Major Forshee was assigned to Marine Medium Tiltrotor Squadron 363 in Miramar, California in October 2012 in order to stand up the squadron as a Tiltrotor Squadron.  In May 2013, Major Forshee was reassigned to Marine Medium Helicopter Squadron 262 in Okinawa, Japan in order to transition that squadron from a Helicopter Squadron to a Tiltrotor Squadron.

While assigned to Marine Medium Tiltrotor Squadron 262, Major Forshee served as the logistics officer where he self-deployed the squadron throughout the INDOPACOM Area of Operation. This included multiple joint bilateral exercises, a humanitarian aid mission to the Philippines, and three presidential support missions. After serving as the logistics officer, Major Forshee served the squadron as the Airframes Officer in Charge and then as the Administration Officer in Charge. After the completion of his time at Marine Medium Tiltrotor Squadron 262, Major Forshee had completed two 31st Marine Expeditionary Unit Fall Patrols and two Spring Patrols and self-deployed to Mainland Japan, South Korea, Philippines, Malaysia, Singapore, Thailand, Guam, and Myanmar.

In October 2017, Major Forshee became the Marine Air Group 36 Aviation Safety Officer. There, he conducted multiple investigations and conducted bilateral planning with the Japanese Self Defense Force in Norther Japan in order to expand MV-22B operations to Northern Japan.

In May 2018, Major Forshee concluded his time in Okinawa and reported to Marine Corps Tactics and Operations Group (MCTOG), Twentynine Palms where he instructed Infantry and Intelligence Officers and Staff Non-Commissioned Officers in Operational Art and Design and Assault Support Operations. While he was there, he received the Operations and Tactics Instructor (OTI) designation and received the Forward Air Controller designation. While at MCTOG, he assisted at the MOS producing school to produce OTIs, conduct battle staff training, and to assist in the evaluation of unit performance at force-on-force exercises.

In April 2021, Major Forshee checked into Marine Aircraft Group 16 and reported to Marine Medium Tiltrotor Training Squadron 204. Upon completion with the Fleet Replacement Squadron, Major Forshee was assigned to Marine Medium Tiltrotor Squadron 163 in September 2021 Where he served as the Director of Safety and Standardizations. In April 2022, Major Forshee was assigned to serve as the Joint Special Operations Task Force Somalia’s Air Officer, there he was responsible for allocation and apportionment of all joint air assets throughout the Joint Special Operations Operating Area. Upon completion with his individual augment, Major Forshee reported back to Marine Medium Tiltrotor Squadron 163 and in November 2022, serves as the Executive Officer.

Major Forshee has flown more than 1100 hours in tactical aircraft. His personal decorations include the Defense Meritorious Service Ribbon, Navy Commendation Medals (gold star), a Navy Achievement Medal, Korean Self Defense Medal, the Humanitarian Service Medal in support of Operation Damayan, the Global War on Terrorism Service Medal, the Global War on Terrorism Expeditionary Service Medal, Sea Service Deployment (gold star), National Defense Service Medal.