James K. Greer

Jim Greer is a Retired Cavalry Officer who served on the Inter-German Border during the Cold War, the Balkans in the 90s, and Iraq and Afghanistan post-9/11. When not serving in combat units his assignments were in leader development and designing future Army forces.

Twitter: @jamesgreer77

Permanent email; 2550175@gmail.com

Before Gustavus Adolphus revolutionized warfare, most armies were composed of groups of uncoordinated mercenaries, with little overall organization or chain of command.