Doyle Glass (born January 22, 1962) is an American historical novelist and sculptor. He is best known for his bestselling nonfiction books Lions of Medina (2007), Swift Sword (new edition 2023) and for sculpting the Texas Medal of Honor Memorial (2008) and the Kentucky Medal of Honor Memorial (2001). Glass began writing and sculpting following a career as a criminal prosecutor in Texas and Kentucky.

Glass was born and raised in Midland, Texas, to George H. Glass, a rancher and oilman, and Myra Glass. He has two brothers, George, Jr., and Braxton. When Glass was twelve years old, he made his first visit to the Alamo and read 13 Days to Glory by Lon Tinkle. He has been fascinated by history ever since. A love of art followed shortly thereafter.

He graduated from Southern Methodist University (SMU) with a BA in history in 1983 and received his Juris Doctor degree, also from SMU, in 1988.

After graduating from law school, Glass began a career as a criminal prosecutor, working as an Assistant District Attorney in McLennan and Bell Counties, Texas and later, as an Assistant Attorney General, Special Prosecutions Division, in the office of the Kentucky Attorney General. In his spare time, he worked to foster his love of creating art.

In 2000, inspired by the American sculptor Augustus Saint Gaudens, Glass retired as a prosecutor and began work as a professional artist. Combining his love of history and art, he conceived of, designed, and created the Kentucky Medal of Honor Memorial, a life-size representation of WWII MOH recipient John Squires, and, later, the Texas Medal of Honor Memorial, a heroic size representation of Korean War MOH recipient George O’Brien.

Inspired by the heroes honored by these memorials and by Lon Tinkle’s account of the Battle of the Alamo that he had read many years before, Glass authored two nonfiction books about the men who fought in the Vietnam War.

His first book, Lions of Medina, was so successful and personally rewarding that he embarked on a career as a full-time writer. Based on personal interviews Glass conducted with survivors of Operation Medina, a military operation conducted by the Marine Corps in the Hai Lang National Forest of South Vietnam, the book was published by Coleche Press in 2007 and by NAL Caliber Penguin in 2008. Medal of Honor recipient William T. Perkins is featured prominently in the work. Lions of Medina was selected as winner of the 2008 USA Book News Best Book Award.

His second book, Swift Sword, based on personal interviews of nearly fifty survivors of Operation Swift, recounts, in the words of the men themselves, a harrowing fight for survival by Marines on a lone knoll in Vietnam’s Que Son Valley. The heroic acts of Medal of Honor recipients Father Vincent Capodanno and Lawrence Peters, along with countless other heroes, are told. The new edition of Swift Sword was chosen as winner of the 2023 Pencraft Award for Best Nonfiction.

Both Swift Sword and Lions of Medina have spent multiple weeks at the top of the Amazon bestseller lists for the Vietnam War, as well as numerous other categories. His third book, Unthrottled, a historical fiction work based on the remarkable life of WWII hero Robert Benoist, is due to be released in 2026.