Gil was born in Sinaloa, Mexico, and moved to the United States before his first birthday. He graduated from high school at the age of 18 and immediately enlisted in the U.S. Marine Corps. He retired in October 2023 after 20 years of honorable service. Gil is a 100% P&T Veteran of the United States Marine Corps.

Gil dedicated his entire career to the Motor Transport field, where he served as an automotive maintenance technician for 16 years. After 16 years as an enlisted Marine serving as a Gunnery Sergeant (E-7), Gil became a Warrant Officer. He reached the rank of Chief Warrant Officer 2 (W-2) before retiring in 2023. During his career, Gil spent five years stationed in Okinawa, Japan. In January 2005, he deployed to Sri Lanka to support humanitarian assistance for the 2004 Indian Ocean tsunami caused by the Sumatra-Andaman earthquake. He completed three combat deployments, two to Iraq and one to Afghanistan, and he deployed in support of training operations to Japan, Australia, Korea, and the Philippines. At the height of his career, Gil served as the Executive Officer for H&S Company, 3rd Battalion, 12th Marine Regiment in Okinawa, Japan.

Gil grew up in the California Central Valley. From birth, he was a hard worker, working in the agricultural field from 13 until he graduated high school. While in high school, Gil played soccer and ran cross country. He decided to serve his country while he was in high school, and he joined the Marine Corps delayed entry program during his senior year. Gil understood the value of hard work and dedication from a young age, and it is something he honed during his time in the Marine Corps. Gil is married and has two children. He resides in Coleville, a small town in the Eastern Sierra Mountains of California. He enjoys being outdoors and spending time with his family.