"'SECTION 1. All officers or persons in the military or naval service of the United States are prohibited from employing any of the forces under their respective commands for the purpose of returning fugitives from service or labor who may have escaped from any persons to whom such service or labor is claimed to be due; and any officer who shall be found guilty of a court-martial of violating this article shall be dismissed from the service. "'SEC. 2. _And be it further enacted_, That this act shall take effect from and after its passage.' "Also, to the ninth and tenth sections of an act entitled 'An Act to Suppress Insurrection, to Punish Treason and Rebellion, to Seize and Confiscate Property of Rebels, and for other Purposes,' approved July 16, 1862; and which sections are in the words and figures following: "'SEC. 9. _And be it further enacted_, That all slaves of persons who shall hereafter be engaged in rebellion against the Government of the United States, or who shall in any way give aid or comfort thereto, escaping from such persons and taking refuge within the lines of the army; and all slaves captured from such persons, or deserted by them and coming under the control of the Government of the United States; and all slaves of such persons found _on_ [or] being within any place occupied by Rebel forces and afterward occupied by forces of the United States, shall be deemed captives of war, and shall be forever free of their servitude, and not again held as slaves. "'SEC. 10. _And be it further enacted_, That no slave escaping into any State, Territory, or the District of Columbia, from any other State, shall be delivered up, or in any way impeded or hindered of his liberty, except for crime, or some offense against the laws, unless the person claiming said fugitive shall first make oath that the person to whom the labor or service of such fugitive is alleged to be due is his lawful owner, and has not borne arms against the United States in the present Rebellion, nor in any way given aid and comfort thereto; and no person engaged in the military or naval service of the United States shall, under any pretense whatever, assume to decide on the validity of the claim of any person to the service or labor of any other person, or surrender up any such person to the claimant, on pain of being dismissed from the service.' "And I do hereby enjoin upon and order all persons engaged in the military and naval service of the United States to observe, obey, and enforce, within their respective spheres of service, the act and sections above recited.