Sergeant Major Cordero was born in New York, NY. He enlisted in the Marine Corps and attended recruit training at Marine Corps Recruit Depot, Parris Island, SC graduating April 1998. In June 1998, he reported to Assault Amphibious School for Assault Amphibian Crewman Course, Camp Pendleton, CA where he received the Military Occupational Specialty of 1833, Amphibian Assault Crewman.
In September 1998, he reported to 3d Assault Amphibious Battalion (AABN), Camp Pendleton, CA. In September 1999, Sergeant Major Cordero was meritoriously promoted to the rank of Corporal. In January 2000, Sergeant Major Cordero deployed to Okinawa, Japan with Alpha Company (Co) as part of the Unit Deployment Program (UDP). In July 2000, Sergeant Major Cordero received orders to 3d Platoon, Delta Company, 3d AABN, 29 Palms, CA. He deployed with Charlie Co in January 2001 as part of the UDP, where he participated in Land Force Cooperation Afloat Readiness and Training.
In October 2001, Sergeant Major Cordero received orders to Recruiters School, MCRD San Diego, CA. In January 2002, he reported to Recruiting Substation Manhattan, Recruiting Station NY, 1st Marine Corps District, where he served as a Canvassing Recruiter. In July 2003, he was meritoriously promoted to the rank of Staff Sergeant.
In April 2005, Sergeant Major Cordero reported to 3d Platoon, Bravo Co, 3d AABN, Camp Pendleton, CA, where he served as a Section Leader. In September 2005, Sergeant Major Cordero deployed to Iraq in support of Operation Iraqi Freedom 5-7. In March 2007, Sergeant Major Cordero redeployed with Bravo Company to OIF 7-02, assigned as Section Leader, 2nd Platoon. In February 2008, Sergeant Major Cordero reported to Assault Amphibian Schools Battalion where he served as the Co Gunnery Sergeant, Co First Sergeant, Platoon Commander, and Senior Instructor. In April 2011, he reported to 2d Platoon, Charlie Co, 3d AABN, Camp Pendleton, CA where he served as a Platoon Sergeant. In October 2011, he deployed to Afghanistan in support of Operation Enduring Freedom 11-2.
In April 2013, Sergeant Major Cordero received orders to Detachment 1, Transportation Services Company, Combat Logistics Battalion 25, Stone Bay, Camp Lejeune, NC and served as the Inspector-Instructor First Sergeant. In December 2015, Sergeant Major Cordero reported to 1st Combat Engineer Battalion, Camp Pendleton, CA where he served as Headquarters and Service Company First Sergeant.
In May 2017, Sergeant Major Cordero reported to 3d Battalion, 12th Marine Regiment to serve as Battalion Sergeant Major, and in May 2018 he served as Battalion Sergeant Major, 3d Reconnaissance Battalion, 3d Marine Division Okinawa, Japan.
In January 2020, Sergeant Major Cordero deployed with Marine Rotational Force-Darwin 20.2, as the Command Element Sergeant Major. In November 2020, Sergeant Major Cordero reported to Combat Logistics Regiment 3, 3d Marine Logistics Group where he served as the Regimental Sergeant Major and in April 2022 during exercise Balikatan 2022, he served as the Command Element Sergeant Major.
In October 2022, Sergeant Major Cordero reported to Joint Task Force-North to serve as the Command Senior Enlisted Leader. In June 2025 Sergeant Major Cordero reported to 3d Marine Logistics Group where he is currently serving as the Command Senior Enlisted Leader.
Sergeant Major Cordero earned a Bachelor of Arts Degree with Honors in Organization Management from Ashford University in November 2015, and a Master's Degree in Strategic Leadership from the University of Charleston, West Virginia in May 2020. He also attended the Leadership at the Peak course.
Sergeant Major Cordero's personal awards include the Defense Superior Service Defense Medal, Defense Meritorious Service Medal, Meritorious Service Medal with gold star in lieu of third award, Joint Service Commendation Medal, Navy and Marine Commendation Medal with gold star in lieu of fourth award, Joint Service Achievement Medal, Navy and Marine Corps Achievement Medal with gold star in lieu of second award, and the Combat Action Ribbon. He has five children Marcos Jr., Joselyn, Adalyn, Caleb and Raelyn. He is married to the former Ms. Roselyn Rosado of Brooklyn, N.Y.