Sergeant Major Joseph C. Redman was born in Livingston, New Jersey. He enlisted in the United States Marine Corps in January 2006. He underwent recruit training at Marine Corps Recruit Depot Parris Island, South Carolina, and was meritoriously promoted to Private First Class. Following recruit training, Private First Class Redman attended Marine Combat Training and the Basic Combat Engineer Course in Camp Lejeune, North Carolina.
In August 2006, Private First Class Redman reported to Bravo Company, 1st Combat Engineer Battalion (1st CEB), 1st Marine Division (1st MARDIV), Camp Pendleton, California. During this tour, he served as an M249 Squad Automatic Weapon Gunner. In December 2006, he was promoted to the rank of Lance Corporal. In March 2007, he deployed to Iraq with Company B, 1st CEB in support of 1st Battalion 2nd Marine Regiment. He was combat meritoriously promoted to the rank of Corporal in August 2007. In February 2008, he was meritoriously promoted to the rank of Sergeant and served as a squad leader. He deployed with the 15th Marine Expeditionary Unit (MEU) from March 2008 to October 2008 with Company A, 1st CEB, in Support of Battalion Landing Team 2d Battalion, 5th Marine Regiment. Upon his return from the 15th MEU, he held the billet of Company Gunnery Sergeant for Company A. He was also the Battalion Color Sergeant from February 2009 to his departure from 1st CEB in December 2009.
In February 2010, Sergeant Redman reported to the 9th Engineer Support Battalion (9th ESB). From March 2010 to April 2011, he led Marines in the Remain Behind Element, attaching to Utilities Platoon, Engineer Support Company, where he held the billet of Platoon Sergeant. He then transferred to the Construction Shop, Engineer Sustainment Company, 9th ESB, and held the billet of Platoon Guide. In February 2011, Sergeant Redman Deployed to Mainland Japan in support of Operation Forrest Light, where he trained the Japanese Ground Self-Defense Force in Engineer Techniques, Tactics, and Procedures. In May 2011, Sergeant Redman's platoon transferred to Engineer Company A, where he held the billets of Squad Leader, Platoon Guide, and Bridge Commander. He deployed to Afghanistan with Company A, Bridge Platoon, 9th ESB from November 2011 to May 2012.
In October 2012, Sergeant Redman attended the Marine Corps Combat Instructor School at the School of Infantry West, Camp Pendleton, California. Upon completing the school, he received the secondary MOS 0913, Combat Instructor. In February 2013, he checked in to Fox Company, MCT Bn, SOI West, Camp Pendleton, California, and assumed his duties as a Combat Instructor. Sergeant Redman was promoted to the rank of Staff Sergeant in December 2013. In May 2014, he executed orders to Headquarters and Instruction Company and was assigned as the Tactics Section Leader in the Instructor Group.
In February 2016, Staff Sergeant Redman executed orders to 1st CEB, where he held the billet of Platoon Sergeant, 3rd Platoon, Company C. From October 2016 to May 2017, Staff Sergeant Redman deployed with his platoon to Iraq in support of 3rd Battalion, 7th Marines, SPMAGTF 17.1. In November 2017, he was promoted to the rank of Gunnery Sergeant and assumed the billet of Platoon Sergeant, 2nd Platoon, Company A. In May 2018, Gunnery Sergeant Redman executed orders to the Marine Corps Engineer School, where he worked as a Military Demolitions Instructor, Demolitions Section leader, Company Gunnery Sergeant, and Company First Sergeant.
In June 2022, He was promoted to the rank of First Sergeant and received orders to Inspector-Instructor duty, Detachment Communications Company, 14th Marine Regiment, 4th Marine Division, Indianapolis, Indiana, where he served as the Inspector-Instructor Unit Senior Enlisted Leader. In July 2025, First Sergeant Redman received orders to 2d Distribution Support Battalion and served as the Littoral Distribution Company Senior Enlisted Leader. In February 2026, Sergeant Major Redman was promoted to his current rank and received orders to Marine Fighter Attack Squadron 542 where he is serving as the Command Senior Enlisted Leader.
His personal awards include the (3) Navy and Marine Corps Commendation Medals, (4) Navy and Marine Corps Achievement Medals, and the Combat Action Ribbon.