Corps Castle is the logo of the U.S. Army Corps of Engineers (USACE). The logo is typically a white castle with three towers set on a red background. When the Corps Castle is worn as insignia on a uniform, it is similar to the logo design but with a dull or shiny brass finish. The look of the Corps Castle traces its history back to the American Revolution and has evolved over time. The logo has received changes throughout the years but gets its finalizing shape from the United States Military Academy Barracks named Pershing Barracks. Background The medieval castle as a logo was started in 1840 on an informal basis. Beginning in 1841, cadets at the United States Military Academy at West Point, New York wore personal insignia of this type known as Gold Castles on their uniforms as they became commissioned officers in the U.S. Army. In 1902, the Corps Castle was formally adopted by the Army as the insignia of the Corps of Engineers. On formal and semi-formal uniforms, the logo is customarily gold in color, although it was changed to silver from gold from 1894–1921. When displayed on combat uniforms for special events, it is customarily black in color. In visual color media, the Corps Castle logo is customarily presented in red and white colors. History and origins The turreted castle was adapted as the symbol of the Engineers, due it representing the two primary responsibilities of an Engineer, offense, and defense. French connection As a consequence, many speculative stories about the origins of the engineers have been advanced. One story traces the origins to a French connection. During the American Revolution, the Continental Army filled its necessity for trained military engineers by either borrowing them from France or having French engineers volunteer for service in the Continental Army. Stories about castle origins credit these French engineers, in particular, General Louis Lebegue Duportail, Chief Engineer, Continental Army, 22 July 1777 – 10 Oct. 1783, with a design based on a castle-style fortification in Verdun, France. These French engineers disappeared from the scene before the castle design appeared in the American Army. Williams explanation While there may be some truth to the French connection, the origins are also attributed to Colonel Jonathan Williams and a member of his staff, Alexander Macomb. Williams—grandnephew of Benjamin Franklin—assisted Franklin during his tenure as envoy to France during the American Revolution.