The powers of departmental commanders are hereby delegated to the above-named district commanders. By command of General Grant: E.D. TOWNSEND, _Assistant Adjutant-General_. GENERAL ORDERS, No. 18. HEADQUARTERS OF THE ARMY, ADJUTANT-GENERAL'S OFFICE, _Washington, March 15, 1867_. The President directs that the following change be made, at the request of Major-General Thomas, in the assignment announced in General Orders, No. 10, of March 11, 1867, of commanders of districts, under the act of Congress entitled "An act to provide for the more efficient government of the rebel States," and of the Department of the Cumberland, created in General Orders, No. 14, of March 12, 1867: Brevet Major-General John Pope to command the Third District, consisting of the States of Georgia, Florida, and Alabama; and Major-General George H. Thomas to command the Department of the Cumberland By command of General Grant: E.D. TOWNSEND, _Assistant Adjutant-General_. WAR DEPARTMENT, ADJUTANT-GENERAL'S OFFICE, _Washington, June 20, 1867_. Whereas several commanders of military districts created by the acts of Congress known as the reconstruction acts have expressed doubts as to the proper construction thereof and in respect to some of their powers and duties under said acts, and have applied to the Executive for information in relation thereto; and Whereas the said acts of Congress have been referred to the Attorney-General for his opinion thereon, and the said acts and the opinion of the Attorney-General have been fully and carefully considered by the President in conference with the heads of the respective Departments: The President accepts the following as a practical interpretation of the aforesaid acts of Congress on the points therein presented, and directs the same to be transmitted to the respective military commanders for their information, in order that there may be uniformity in the execution of said acts: 1. The oath prescribed in the supplemental act defines all the qualifications required, and every person who can take that oath is entitled to have his name entered upon the list of voters. 2. The board of registration have no authority to administer any other oath to the person applying for registration than this prescribed oath, nor to administer an oath to any other person touching the qualifications of the applicant or the falsity of the oath so taken by him. The act, to guard against falsity in the oath, provides that if false the person taking it shall be tried and punished for perjury. No provision is made for challenging the qualifications of the applicant or entering upon any trial or investigation of his qualifications, either by witnesses or any other form of proof. 3. _As to citizenship and residence_: