Juan P. Segura was born in the Dominican Republic. He graduated from Barbara Goleman Senior High School in Miami in 2000. Juan P. Segura enlisted in the Marine Corps and attended recruit training at Charlie Company, 1st Recruit Training Battalion, Marine Corps Recruit Depot Parris Island, South Carolina, and was meritoriously promoted to the rank of Private First Class.
Upon completion of recruit training in September of 2000, Private First Class Segura attended Alpha Company, Infantry Training Battalion, School of Infantry at Camp Geiger and was assigned the military occupational specialty 0311, infantry rifleman. In December 2000, Private First Class Segura received orders to Alpha Company, Marine Barracks Washington. There he attended Silent Drill School and was selected to serve with the elite “Marching 24” man platoon. Private First Class Segura was promoted to the rank of Lance Corporal in March of 2001. He was selected as a Silent Drill School instructor in September 2001. In October 2002, Lance Corporal Segura was promoted to the rank of Corporal. Corporal Segura served as infantry squad leader until he was promoted to the rank of Sergeant in September 2004 and served as the platoon guide.
In December 2004, Sergeant Segura received orders to 2nd Battalion, 7th Marines, 1st Marine Division, and deployed to Fallujah, Iraq, in support of Operation Iraqi Freedom serving as an infantry squad leader. In July 2005, Sergeant Segura attended infantry squad leaders course and was distinguished as a member of the super squad. In January 2007, Sergeant Segura redeployed with 2nd Battalion, 7th Marines, 1st Marine Division, to Saqlawiah, Iraq. In March 2008, Sergeant Segura was combat meritoriously promoted to the rank of Staff Sergeant and reappointed as a Company Gunnery Sergeant for 7th Marine Regiment.
In December 2009, Staff Sergeant Segura received orders to Marine Corps Recruit Depot San Diego, and was assigned to Kilo Company, 3rd Recruit Training Battalion, he served as a Drill Instructor, Senior Drill Instructor, and Chief Drill Instructor.
December 2011, Staff Sergeant Segura reported to Kilo Company, 3rd Battalion, 6th Marines, 2nd Marine Division, and was assigned as a Platoon Sergeant. In February 2012, Staff Sergeant Segura attended Infantry Unit Leaders Course at Camp Geiger, North Carolina. Upon completion he earned the MOS 0369 and was assigned as Team Chief, 2nd Kandak, 215th Corps, ANA, as an advisor for Marine detachment of foreign advisors. In September 2012, Staff Sergeant Segura deployed to Helmand Province Afghanistan in support of Operation Enduring Freedom. In April 2013, Staff Sergeant Segura was reassigned to Kilo Company, 3rd Battalion, 6th Marines, 2nd Marine Division, as the WPNS Platoon Sergeant. In August 2014, he was promoted to the rank of Gunnery Sergeant and deployed with the 21st Marine Expeditionary Unit to the CENTCOM theater of operations.
In October 2015, he received orders to I&I duty in Grand Rapids, Michigan, with Alpha Company, 1st Battalion, 24th Marines, as the Operations Chief. In October 2017, he deployed to Helmand Province Afghanistan attached to Task Force South West ROTO I/II, in support of Operation Freedom’s Sentinel. In February 2018, he was promoted to the rank of First Sergeant and subsequently received orders to Marine Corps Recruit Depot Parris Island, 1st Recruit Training Battalion as the Charlie Company First Sergeant. He was then re-assigned to serve as the Drill Instructor School First Sergeant in June 2020. In November 2021, he was selected to the rank of Sergeant Major and received orders to Headquarters Battalion, Marine Air Ground Task Force Training Command, Marine Corps Air Ground Combat Center, Twentynine Palms, California.
In November 2024, Sergeant Major Segura received orders to Marine Aircraft Group 14, 2nd Marine Air Wing at Cherry Point, North Carolina, where he served as the Group Sergeant Major.
In April 2026, Sergeant Major Segura received orders to Marine Barracks Washington, D.C., where he currently serves as the Sergeant Major.
Sergeant Major Segura’s personal awards include the Bronze Star Medal, Meritorious Service Medal, Navy and Marine Corps Commendation Medal with Combat “V” and five gold stars in lieu of sixth award, the Navy and Marine Corps Achievement Medal, the Outstanding Volunteer Service Medal, and the Combat Action Ribbon with gold star in lieu of second award.