Ed divides his time between homes in Katy, Texas and in rural Texas. Graham Turner is a leading historical artist, specializing in the medieval period.

He has illustrated numerous titles for Osprey, covering a wide variety of subjects from the dress of the 10th-century armies of the Caliphates, through the action of bloody medieval battles, to the daily life of the British Redcoat of the late 18th century. The son of the illustrator Michael Turner, Graham lives and works in Buckinghamshire, UK.

A native of southeastern France, Romain V. Cansière has worked in the medicinal plant industry in France and South Africa. He currently works as a crop advisor for a cooperative of essential oil producers. Interested in the history of the US Marine Corps since his teenage years, Romain is the co-author of Tanks in Hell - A Marine Corps Tank Company on Tarawa, winner of the 2016 General Wallace M. Greene Jr.

Award for distinguished non-fiction. He lives in Riez, France.A retired geologist and geophysicist, Oscar E. ("Ed”) Gilbert has written for Osprey's Warrior, Battle Orders, and Campaign series, with concentration the history of the US Marine Corps and state militias in the American Revolution and the War of 1812. He is the author of a four-volume history of Marine Corps tank battalions, and the co-author of Tanks in Hell and True for the Cause of Liberty.

Edouard Groult grew up inspired by watching historical documentaries with his father and developed a fascination for historical and fantasy art. Following art studies in both Paris and Belgium he worked as a concept artist in the videogame industry and in recent years has also undertaken historical commissions while working as a freelancer for historical magazines. He lives and works in Oxford, UK.