Louis de Tousard Louis de Tousard ( 1749 - 1817 ) was a French artillerist who served in the American Continental Army under La Fayette , and later was given a US commission . Tousard wrote two very influential books : one was a proposal for a school for officers which became the blueprint for West Point , and the other was a manual for artillery officers which became standard in the young army . Biography . Educated at the Strasbourg school of artillery , Tousard served with the Continental Army between 1777 - 1778 and lost an arm due to wound received in the Battle of Rhode Island . He was decorated with the Order of Saint Louis on his return to France . After being briefly imprisoned during the French Revolution in 1793 at Prison de l ' Abbaye , he returned to the US in 1795 and given a commission as a major in the 2nd U . S . Artillery Regiment in the Corps of Artillerists and Engineers . By 1800 he was a lieutenant colonel , and an Inspector of Artillery . In this capacity , he supervised the construction of several forts in Eastern seaboard of US , and the construction and testing of cannons . His influence with George Washington was instrumental in establishing the U . S . Military Academy at West Point in 1802 , initially to train engineers and artillerists , with a curriculum modeled after École Polytechnique . After retiring from US service he served France in military and diplomatic capacities . In 1809 he published " The American Arillerist ' s Companion , or Elements of Artillery " , a book that became the basic manual of US artillery service . Influence on armory and manufacturing . The most important feature of his influence on the army was that he taught the ideas of Jean Baptiste Vaquette de Gribeauval , the man who originated the idea of interchangeable parts for guns . The War Department then set up the armories at Springfield and Harpers Ferry , which then set out to perfect the idea . Despite the claims of Eli Whitney , who failed to deliver on his original 1798 contract until 1809 and who never achieved interchangeabiltity , the American system of manufacturing was not perfected until inside contractor Captain John H . Hall realized it with the M1819 Hall rifle . Historian David A . Hounshell said , " The importance of Tousard ' s book [ on artillery ] , as well as his informal teaching of officers in the Corps of Artillerists and Engineers , cannot be overemphasized . [ … ] Thomas Jefferson ' s enthusiasm for Honoré Blanc ' s experiments with the manufacture of interchangeable musket parts and the influence on the American military of the rationalism of General Gribeauval and his followers firmly established the intellectual and institutional basis for the rise of the American system of arms production . The pure rationalism of ' system and uniformity ' provided an adequate incentive for the pursuit of this goal . The United States War Department soon found the idea of interchangeability irresistible , and through its own armories and through private arms contracts it encouraged and supported attempts to achieve this end . Eventually the War Department " demanded " interchangeability . Ordnance officers elevated the idea of interchangeability to an ideal and helped to transform it into a reality . " Other military contributions . In addition to writing the proposal for West Point , Major de Tousard also designed Fort Adams and Fort Hamilton in Newport , Rhode Island .