men-at-arms series American Civil War armies : 2: Union artillery, cavalry, and infantry / text by Philip Katcher ; colour plates by Ron Volstad warrior series Confederate Infantryman, 1861-65 / Ian Drury ; illustrated by C. Hook battle orders US Army Infantry Divisions 1944-45 / John J. Sayen Technology and the American way of war / Thomas G. Mahnken Sniper : a history of the US marksman / Martin Pegler weapon Browning .30-caliber machine guns / Gordon L. Rottman