Development of U.S. Army fire power in the United States. Sketch of Biblical story of David and Goliath, emphasizing the sling as an extended weapon. Sketches of other examples, such as catapult, where a sling is employed as weapon. Sketch of sword and shield used in combat. A man aims with a crossbow. Another uses an English long bow. Drawings of progression of developments in artillery, from the earliest days. Illustrations of small arms developments. A man loads and fires a gun. Sketches of Continental Army using artillery during Revolutionary war, in America. Sketches of French soldiers using artillery in Napoleon's army. Drawings of weapons being used in the American Civil War. Soldiers load and fire cannons on a battlefield. A breach loading weapon.Photograph of Civil War era Union gun crew with field artillery piece. A mobile field gun with 25 small bore barrels. An early gatling gun. Sketches of U.S. artillery being used in Spanish-American War.

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