HEADQUARTERS ARMY OF THE POTOMAC, April 30-10 p.m.

Hon. E. M. STANTON,
Secretary of War:

Opened upon Yorktown wharf to-day with Battery No. 1; drove off all their schooners and put a stop to all operations in that quarter. Result quite satisfactory. Work on new batteries progressing rapidly. Condition of roads renders it extremely difficult to get up the heavy guns and ammunition. Raining again to-day. Our first parallel now secure and flanks well covered. Enemy has fired considerably to-day, but I have not learned that any one was injured.

GEO. B. McCLELLAN,

Major-General.

GENERAL ORDERS,
HDQRS. ARMY OF THE POTOMAC,

No. 119.
Camp Winf. Scott, near Yorkt'n, Va., Ap'l 30, 1862.

Paragraph XI of General Orders, No. 102, current series, prescribing flags to designate the various headquarters, is amended as follows:

For the headquarters of the Cavalry Reserve - yellow flag, with two blue stripes, 6 inches in width, crossing diagonally.

First Brigade, Cavalry Reserve - yellow flag with a blue star in the center.

Second Brigade, Cavalry Reserve - yellow flag with two blue stars in the center.

For the Artillery Reserve - red flag with a white star in the center.

For the brigade of regular infantry - blue flag with a white star in the center.

All the above flags to be 6 feet long and 5 feet wide.

By command of Major-General McClellan:

S. WILLIAMS,

Assistant Adjutant-General.

SPECIAL ORDERS,
HDQRS. ARMY OF THE POTOMAC,

No. 129.
Camp Winf. Scott, near Yorkt'n, Va., Ap'l 30,'62.

* * * * *

II. Brigadier General Philip Kearny is assigned to the command of the Third Division of the Third Army Corps, in place of Brigadier General C. S.

Hamilton, relieved.

By order of Major-General McClellan:

S. WILLIAMS,

Assistant Adjutant-General.

9 R R-VOL XI, PT III