Colonel Rob Weiler enlisted in the Marine Corps Reserve in 1992, obtaining the rank of Corporal. He was commissioned a Marine Second Lieutenant in December of 1995 upon graduation from George Mason University in Virginia, his home state.
Colonel Weiler graduated from The Basic School in September of 1995 and, subsequently, completed Infantry Officer Course, earning the MOS of 0302. He reported to 1st Battalion, 1st Marines and served as 1st Platoon Commander, Company A. He deployed with the 13th Marine Expeditionary Unit (MEU) as a Platoon Commander and with the 15th MEU as the Executive Officer of Company A.
In April of 2000, Colonel Weiler reported to Officer Candidates School and served in billets including Assistant Operations Officer, Platoon commander, and Company Executive Officer. In January 2002, he reported to the United States Senate as a Military Legislative Fellow, assisting with Foreign Policy, Veteran's Affairs, and Defense issues with Senator Ben Nelson of Nebraska. Upon completion, Colonel Weiler attended the Advanced Armor Captain's Career Course in Fort Knox, Kentucky.
In June 2003, Colonel Weiler reported for duty with 2d Battalion, 4th Marines, 1st Marine Division. He assumed command of Weapons Company and assisted with its transition to a Mobile Assault Company, preparing them for combat operations in Iraq. Colonel Weiler led the Mobile Assault Company in support of Operation Iraqi Freedom II in Ar Ramadi, Iraq prior to being assigned as the Battalion Operations Officer in November 2005. As the BLT's Operations Officer, he deployed with the 31st MEU.
In January 2006, Colonel Weiler reported to Weapons Company, 2d Battalion, 24th Marines as the Inspector-Instructor where he later assumed command of the company and deployed in support of Operation Iraqi Freedom.
In June 2008, Colonel Weiler departed Iraq and reported to the Marine Corps Command and Staff College, followed by the School of Advanced Warfighting. Upon completion, he reported to 1st Marine Logistics Group, where he deployed to Afghanistan twice as an Operational Planner in support of Operation Enduring Freedom.
Colonel Weiler assumed command of 2d Battalion, 4th Marines in June of 2012 and deployed with the 31st MEU. Following command, he graduated from the Marine Corps War College in 2015 and served in the Office of the Secretary of Defense, Strategy, and Force Development until 2018. Prior to assuming command of the 5th Marine Regiment in 2019, Colonel Weiler served for the Inspector General of the Marine Corps' office for a short tenure.
Following command with the 5th Marine Regiment, Colonel Weiler served as the Director of GCE Programs in the Capabilities Development Directorate and the Military Secretary to the Commandant of the Marine Corps. He is currently serving as the Assistant Division Commander for the 1st Marine Division.
His personal awards include the Silver Star, Purple Heart, Legion of Merit, Meritorious Service Medals, Navy-Marine Corps Commendation Medals with combat distinguishing device, Navy-Marine Corps Achievement Medals, and the Combat Action Ribbon.