Sergeant Major Todd M. Colwell is a native of Connecticut. He enlisted in September 1997 and underwent recruit training with Company L, 3rd Recruit Training Battalion, Marine Corps Recruit Depot, Parris Island, South Carolina.
In December 1997, Sergeant Major Colwell completed Mortarman training aboard Camp Lejeune, North Carolina. In February 1998 he received orders to Weapons Company, 1st Battalion, 6th Marines, 2nd Marine Division for duty. He served in multiple billets within the 81 mm Mortar Platoon and deployed in support of the 24th Marine Expeditionary Unit and the Unit Deployment Program to Okinawa, Japan.
In July 2000, Sergeant Major Colwell reported to Drill Instructor School, Marine Corps Recruit Depot, San Diego. Upon graduation he was assigned to Kilo Company, 3d Battalion where he completed eight cycles, one of which was as a Senior Drill Instructor.
In February, 2004, Sergeant Major Colwell volunteered to go Temporary Assigned Duty to Iraq as a member of an Advisor Support Team in support of OPERATION IRAQI FREEDOM. He was assigned to the Coalition Military Advisor Training Team (CMATT), 5th Battalion of the Iraqi Armed Forces as an infantry company advisor. He redeployed to the continental U.S. (CONUS) in September, 2004.
In November, 2004 Sergeant Major Colwell reported to 2d Battalion, 4th Marines, Camp Pendleton, California as the 81mm Mortar Platoon Section Leader. In April, 2005 he deployed with 31st Marine Expeditionary Unit and returned CONUS November 2005. Upon returning, he was assigned to 1st Platoon, Fox Company as a Platoon Sergeant. From September 2006 to May 2007, he deployed with the 15th Marine Expeditionary Unit to Ar Ramadi, Iraq in support of OPERATION IRAQI FREEDOM.
In August 2007, Sergeant Major Colwell reported to Marine Air-Ground Combat Center, 29 Palms, California to assist in establishing the Marine Corps Tactics and Operations Group (MCTOG). While there he served as an instructor for their Tactical Marine Air Ground Task Force (MAGTF) Integration Course and trained numerous Ground Combat Element (GCE) battalions and regiments through the Operational Forces Support Program.
In June 2010, he reported to 2d Battalion, 5th Marines, Headquarters and Services Company and held the billet of Company Gunnery Sergeant. In December 2010, Sergeant Major Colwell was frocked to First Sergeant and deployed with the 31st Marine Expeditionary Unit as the Headquarters and Service Company First Sergeant. Upon returning to CONUS, he was assigned to Company E. Again in February 2012 he deployed as the Company First Sergeant with Company E, 2d Battalion, 5th Marines to Helmand Province, Afghanistan in support of Operation ENDURING FREEDOM and returned CONUS September 2012.
In January 2013, Sergeant Major Colwell was assigned to 1st Intelligence Battalion, I Marine Expeditionary Force Headquarters Group for duty as the Company First Sergeant with Battlespace Surveillance Company. In January 2015 he assumed duties as the Counterintelligence/Human Intelligence Company First Sergeant.
In July 2016 Sergeant Major Colwell assumed the billet as the Sergeant Major of Marine Corps Recruiting Station Portsmouth, New Hampshire, which was deactivated April 2018 and reactivated as Marine Corps Recruiting Station Boston. In May 2019, he transitioned to Marine Corps Air Station Beaufort, South Carolina to serve as the Squadron Sergeant Major for Marine Fighter Attack Training Squadron 501. In February 2020 he assumed his billet as the Marine Aircraft Group 31 Sergeant Major. In May 2022, he became the Sergeant Major of the 2d Marine Division.
Sergeant Major Colwell holds a Bachelor of Science Degree in Strategic Studies and Defense Analysis from Norwich University.
Sergeant Major Colwell's personal decorations include the Bronze Star with "V" device, the Meritorious Service Medal, the Joint Service Commendation Medal, the Navy and Marine Corps Commendation Medal with gold star in lieu of second award, the Navy and Marine Corps Achievement Medal with "V" device and two gold stars in lieu of third award, and the Combat Action Ribbon with one gold star in lieu of second award.