Lieutenant Colonel Kappel enlisted in the Marine Corps in 1996 and served as a radio operator with Fox Battery, 2d Bn, 14th Marines. In 2001, upon completing an undergraduate degree from the University of Oklahoma, he received his commission as a second lieutenant and reported to The Basic School.
After completing The Basic School, Infantry Officer Course, and Assault Amphibian Officer Course, 2ndLt Kappel reported to 2d Assault Amphibian Battalion. As a platoon commander, he deployed to Iraq in 2003 and then again in 2004 in support of Operation Iraqi Freedom.
In 2005, 1stLt Kappel reported to Program Manager-Training Systems for assignment as the project officer for Combat Vehicle Training Systems. In 2007, upon approval of a lateral move into the infantry community, Captain Kappel was reassigned to the School of Infantry-West for duty as a company commander within Marine Combat Training Battalion.
In 2009, Captain Kappel reported to 3d Light Armored Reconnaissance Battalion and deployed to Afghanistan in 2010 as a company commander and then again in 2012 as the battalion’s operations officer in support of Operation Enduring Freedom.
Following his assignment with 3d LAR Bn, Major Kappel was assigned to Deputy Commandant, Plans, Policies, and Operations and responsible for Marine Corps policy for strategic weapons security. During his assignment at the Pentagon he would receive a master’s degree from American University.
In 2015, Major Kappel attended Marine Corps Command and Staff College. Upon graduation in 2016, Major Kappel reported to Bahrain, Task Force 51-5, and worked as a staff planner in the G-5. In 2017, Major Kappel reported to Marine Corps Recruit Depot, Parris Island where he served as a battalion executive officer and, upon promotion to lieutenant colonel, service as the regimental operations officer.
Lieutenant Colonel Kappel is currently assigned to the Second Marine Division, 2d Marine Regiment, 3d Battalion, 6th Marines for duty as commanding officer of the Teufelhunden Battalion.