First Brigade, Cavalry Division

U.S.A.

First Brigade, Cavalry Division.

Major Charles J. Whiting, 2nd U.S. Cavalry,

Commanding.

Organization.

5th and 6th United States Cavalry.

(September 17, 1862.)

The Fifth United States Cavalry, Captain Joseph H. McArthur commanding, crossed the middle bridge over the Antietam shortly before noon and took position on ...