court martial: at a court-martial held on 7 Jan. 1804 at New Orleans, Captain Henry Muhlenberg of the Regiment of Artillerists stood trial on charges of neglect of duty, disobedience to orders, and conduct unbecoming an officer for leaving his post without permission and in violation of orders. Finding Muhlenberg guilty, the court sentenced him to be dismissed from the service according to section 18, article 5, and article 20 of the appendix of the rules and articles of war (General Orders, 20 June 1804, in DNA: RG 94, James Wilkinson Order Book; Rules and Articles, for the Better Government of the Troops, Raised, or to be Raised, and Kept in Pay, By, and at the Expence of the United States of America [Washington, D.C., 1800; Sowerby, description begins E. Millicent Sowerby, comp., Catalogue of the Library of Thomas Jefferson, Washington, D.C., 1952-59, 5 vols. description ends No. 1987], 29, 38).