And be it further enacted, That it shall be lawful for His Majesty, by any Warrant or Warrants under His Royal Sign Manual, to make and issue such Orders, and declare and establish such Rules and Regulations for the more speedy and effectual Examination and Settlement of the Accounts of Regimental Expenditures, or of such other Expenditures for Army Services, as usually have been or shall be hereafter examined in the Office of the Secretary at War, as shall appear to be most expedient, and to facilitate the final Examination and Settlement of such Accounts.