CAMP WARREN, March 22, 1864.

Major-General McCLERNAND:

I have the honor to say to you that the enemy, about 40 in number, reconnoitered the reefs to-day about 10 a.m., approaching our pickets on the reef, while a body appeared on the mainland so far off as not to be very distinctly seen by the pickets as to number; after staying, viewing our position, about one and a half hours, disappeared.

Very respectfully,

JAMES ARMSTRONG,

Captain Texas Scouts.

GENERAL ORDERS,
HDQRS. 13TH A. C., DEPT. OF THE GULF, Numbers 18.
Pass Cavallo, Tex., March 22, 1864.

I. The following regiments and batteries are authorized to have inscribed on their colors the names of the several battles set opposite them, in accordance with paragraph 11, Appendix B, Revised Army Regulations, 1863:

Eighth Regiment Indiana Volunteer Infantry: Rich Mountain, Pea Ridge, Port Gibson, Champion's Hill, Black River Bridge, Vicksburg, Jackson, Fort Esperanza.

Sixteenth Regiment Ohio Volunteer Infantry: Tazewell, Chickasaw Bluffs, Port Gibson, Champion's Hill, Black River Bridge, Vicksburg, Jackson.

Eighteenth Regiment, Indiana Volunteer Infantry: Blackwater, Sugar Creek, Pea Ridge, Cotton Plant, Port Gibson, Champion's Hill, Black River Bridge, Vicksburg, Jackson, Fort Esperanza.

Nineteenth Regiment Iowa Volunteer Infantry: Prairie Grove, Van Buren, Vicksburg, Yazoo City, Sterling's Farm, Brownsville.

Twentieth Regiment Wisconsin Volunteer Infantry: Prairie Grove, Van Buren, Vicksburg, Yazoo City, Atchafalaya.

Twenty-first Regiment Iowa Volunteer Infantry: Hartville, Port Gibson, Champion's Hill, Black River Bridge, Vicksburg, Jackson.

Twenty-second Regiment Iowa Volunteer Infantry: Port Gibson, Champion's Hill, Black River Bridge, Vicksburg, Jackson.

Twenty-third Regiment Iowa Volunteer Infantry: Port Gibson, Champion's Hill, Black River Bridge, Milliken's Bend, Vicksburg, Jackson, Fort Esperanza.

Thirty-eighth Regiment Iowa Volunteer Infantry: Vicksburg.

Forty-second Regiment Ohio Volunteer Infantry: Middle Creek, Pound Gap, Cumberland Gap, Tazewell, Chickasaw Bluffs, Arkansas Post, Port Gibson, Champion's Hill, Black River Bridge, Vicksburg, Jackson.

Forty-ninth Regiment Indiana Volunteer Infantry: Chickasaw Bluffs, Arkansas Post, Port Gibson, Champion's Hill, Black River Bridge, Vicksburg, Jackson.

Sixty-ninth Regiment Indiana Volunteer Infantry: Richmond, Chickasaw Bluffs, Arkansas Post, Port Gibson, Champion's Hill, Black River Bridge, Vicksburg, Jackson.

Ninety-first Regiment Illinois Volunteer Infantry: Elizabethtown, Atchafalaya.