77TH GONG. , 2D SESS.-CH. 413 --JUNE 16, 1942 tent orders, and for deduction to be made from mileage accounts when transportation is furnished by the United States, are hereby made applicable to all the services mentioned in the title of this Act, but in cases when orders are given for travel to be performed repeatedly between two or more places in the same vicinity, as determined by the head of the executive department concerned, he may, in his discretion, direct that actual and necessary expenses only be allowed. Actual expenses only shall be paid for travel under orders in Alaska and outside the limits of the United States in North America. Unless otherwise expressly provided by law, no officer of the services mentioned in the title of this Act shall be allowed or paid any sum in excess of expenses actually incurred for subsistence while traveling on duty away from his designated post of duty, nor any sum for such expenses actually incurred in excess of $7 per day. The heads of the executive departments concerned are authorized to prescribe per diem rates of allowance, not exceeding $6, in lieu of subsistence to officers traveling on official business and away from their designated posts of duty: Provided, That for travel by air under competent orders on duty without troops, under regulations to be prescribed respectively by the heads of the departments concerned, members (including offi- cers, warrant officers, contract surgeons, enlisted men, aviation cadets, and members of the Nurse Corps) of the services mentioned in the title of this Act, and of the legally constituted Reserves of said services while on active duty, and of the National Guard while in Federal service, or while participating in exercises, or performing duties under sections 92, 94, 97, or 99 of the National Defense Act, shall, in lieu of mileage or other travel allowances, be allowed and paid their actual and necessary traveling expenses not to exceed $8 per day, or, in lieu thereof, per diem allowances at rates not to exceed $6 per day. Travel by personnel of the services mentioned in the title of this Act, including the Reserve components thereof and the National Guard while on active duty in the Federal service, on commercial aircraft, domestic or foreign, including travel between airports and centers of population or posts of duty when incidental to travel on commercial aircraft, shall be allowed at public expense when author- ized or approved by competent authority, and transportation requests for such travel may be issued upon such authorizations. Such expense shall be allowed without regard to comparative costs of transporta- tion by aircraft with other modes of transportation. Individuals belonging to any of the services mentioned in the title of this Act, including the National Guard and the Reserves of such services, traveling under competent orders which entitle them to transportation or transportation and subsistence as distinguished from mileage, who, under regulations prescribed by the head of the department concerned, travel by privately owned conveyance shall be entitled, in lieu of transportation by the shortest usually traveled route now authorized by law to be furnished in kind, to a money allowance at the rate of 3 cents per mile for the same distance: Pro- vided, That this provision shall not apply to any person entitled to traveling expenses under the Subsistence Expense Act of 1926. When any officer, warrant officer, or enlisted man above the fourth grade, having dependents as defined in section 4 hereof, is ordered to make a permanent change of station, the United States shall furnish transportation in kind from funds appropriated for the transportation of the Army, the Navy, the Marine Corps, the Coast Guard, the Coast and Geodetic Survey, and the Public Health Service to his new station for such dependents: Provided, That for persons in the naval service the term "permanent station" as used in this section shall be interpreted to mean a shore station or the home yard or home port 365 Travel in Alaska and outside U. S . limits in North America. Subsistence while traveling; limitation. Per diem in lieu of subsistence. Proviso. Travel by air. 39 Stat. 206, 207 . 32 U.S. C. § 62-65, 144-146. Travel on commer- cial aircraft. Travel by privately owned conveyance. Proviso. 44 Stat. 688 . U. S. C. §§ 821-823 , 824-833 . Ante, p. 39. Transportation of dependents on perma- nent change of station. Proeiso. "Permanent sta- tion. " t6.STAT.]
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