Gregg Adams earned a doctorate in physics in 1983 from the University of Missouri-Rolla. He is the author of CBT 020 King's African Rifles Soldier vs Schutztruppe Soldier and CBT 032 US Marine vs German Soldier. Johnny Shumate began his career in 1987 after graduating from Austin Peay State University. Most of his work is rendered in Adobe Photoshop using a Cintiq monitor. His greatest influences are Angus McBride, Don Troiani, and Edouard Detaille. He works as a freelance illustrator and lives in Tennessee.