Gregg Adams earned a doctorate in physics in 1983 from the University of Missouri-Rolla. He is the author of several Osprey titles, including King's African Rifles Soldier vs Schutztruppe Soldier, US Marine vs German Soldier and Japanese Soldier vs US Soldier, all for the Combat series. Johnny Shumate works as an illustrator in Tennessee. His greatest influences are Angus McBride, Don Troiani, and Édouard Detaille.