 Guyton de Morveau served on the Committee of Public Safety from 6 April 1793 to 10 July 1793, when he resigned in order to devote his time to the manufacture of firearms, and formation of a corps of balloonists for the French Revolutionary Army.He himself flew in a balloon during the battle of Fleurus on 26 June 1794, and assisted in several other battles.He was among the founders of the École Polytechnique and the École de Mars, and was a professor of mineralogy at the Polytechnique (as well as its director in 1797).