GENERAL ORDERS, 
No. 55. 
WAR DEPARTMENT, 
Adjutant General’s Office, 
Washington, August 10, 1861. 
I. Par. 2 of Gen. Orders No. 47 from this Office, dated July 25, 
1861, is hereby rescinded, and in accordance with section 10 of the 
act of Congress approved July 22, 1861, every General commanding a 
separate Department, or a detached army, will, from time to time, 
appoint Military Boards or Commissions for the examination of Vol- 
unteer Officers upon the points therein specified. 
II. -In pursuance of the 12th section of the act of Congress approved 
August 3d, 1861, the six mounted regiments of the Army are consoli- 
dated in one corps, and will hereafter be known as follows : 
The 1st Dragoons, as the 1st Cavalry. 
The 2d Dragoons, as the 2d Cavalry. 
The Mounted Riflemen, as the 3d Cavalry. 
The 1st Cavalry, as the 4th Cavalry. 
The 2d Cavalry, as the 5th Cavalry. 
The 3d Cavalry as the 6th Cavalry. 
By order: 
L. THOMAS, 
Adjutant General. 
Official : 
Assitiant Adjutant General,