WAR DEPARTMENT, ADJUTANT-GENERAL'S OFFICE. _Washington, May 1, 1866_. ORDER IN RELATION TO TRIALS BY MILITARY COURTS AND COMMISSIONS. Whereas some military commanders are embarrassed by doubts as to the operation of the proclamation of the President dated the 2d day of April, 1866, upon trials by military courts-martial and military officers; to remove such doubts-- _It is ordered by the President_, That hereafter, whenever offenses committed by civilians are to be tried where civil tribunals are in existence which can try them, their cases are not authorized to be, and will not be, brought before military courts-martial or commissions, but will be committed to the proper civil authorities. This order is not applicable to camp followers, as provided for under the sixtieth article of war, or to contractors and others specified in section 16, act of July 17, 1862, and sections 1 and 2, act of March 2, 1863. Persons and offenses cognizable by the Rules and Articles of War and by the acts of Congress above cited will continue to be tried and punished by military tribunals as prescribed by the Rules and Articles of War and acts of Congress hereinafter cited, to wit: [Sixtieth of the Rules and Articles of War.] 60. All sutlers and retainers to the camp, and all persons whatsoever serving with the armies of the United States in the field, though not enlisted soldiers, are to be subject to orders, according to the rules and discipline of war. [Extract from "An act to define the pay and emoluments of certain officers of the Army, and for other purposes," approved July 17, 1862.] SEC. 16. _And be it further enacted_, That whenever any contractor for subsistence, clothing, arms, ammunition, munitions of war, and for every description of supplies for the Army or Navy of the United States, shall be found guilty by a court-martial of fraud or willful neglect of duty, he shall be punished by fine, imprisonment, or such other punishment as the court-martial shall adjudge; and any person who shall contract to furnish supplies of any kind or description for the Army or Navy, _he_ shall be deemed and taken as a part of the land or naval forces of the United States for which he shall contract to furnish said supplies, and be subject to the rules and regulations for the government of the land and naval forces of the United States. [Extract from "An act to prevent and punish frauds upon the Government of the United States," approved March 2, 1863.]