LtCol Fiscus was raised in Florida and enlisted in the Marine Corps Reserves in May 1993.  From 1993 to 1996, he served in 4th Amphibious Assault Battalion.  In December 1996, he earned a Bachelor of Science degree in Biology from the University of Central Florida.  In January 1997, he was commissioned a Second Lieutenant.

As a Company Grade Officer, LtCol Fiscus served as Platoon Commander, Weapons Platoon, Alpha Company, 1st Battalion, 1st Marines; Platoon Commander, 1st Force Reconnaissance Company; Assistant Operations Officer and Element Commander, Marine Corps Special Operations Command, Detachment One (MCSOCOM Det-1); and Commanding Officer, Weapons Company, 1st Battalion, 5th Marines.

As a Field Grade Officer, LtCol Fiscus was assigned as the Operations Officer, 1st Battalion, 5th Marines; completed USMC Command and Staff College; served as the Infantry Advocate and the Commandant's Operations Briefer in HQMC, PP&O prior to his most recent assignment as a Non-DoD LNO in Marine Corps Augmentation and Training Support Unit (MCATSU).

LtCol Fiscus has completed 13 total deployments: two combat tours to Iraq (OIF-I and OIF-II) with 1st Force Reconnaissance Company and MCSOCOM Det-1 respectively, three WESTPAC deployments with the 11th MEU (SOC), one 31st MEU deployment, and seven combat deployments to Afghanistan (OEF) while serving as a Non-DoD LNO.