[Indorsement.]

Telegraphed for General Birney's information.

GEO. G. MEADE.

HEADQUARTERS ARMY OF THE POTOMAC, June 18, 1864 - 1.30 p. m.

Captain CADWALADER,
Headquarters Eighteenth Corps:

Gibbon's first assault was unsuccessful. Another will soon be made. The General Martindale to advance as long as he can and call up all his command to his support.

GEO. G. MEADE,

Major-General, Commanding.

GENERAL MARTINDALE'S HEADQUARTERS,

[June 18, 1864] - 2.10 p. m.

Major-General MEADE:

General Martindale has his whole force up, and will advance in a few minutes. Two batteries in the bluff at the meeting of Harrison's Creek and the river are about ready to open fire. Their fire will be of great service in covering the advance.

CHAS. E. CADWALADER,

Captain and Aide-de-Camp.

HEADQUARTERS ARMY OF THE POTOMAC, June 18, 1864 - 2.40 p. m.

Brigadier-General MARTINDALE:

Finding it impossible to effect co-operation by appointing an hour for attack, I have sent an order to each corps commander to each attack at once at all hazards and without reference to each other. I have to request you will do the same and not wait any longer for those on your left. It is of the utmost importance to settle to-day whether the enemy can be dislodged.

GEO. G. MEADE,
Major-General, Commanding.

JUNE 18, 1864 - 2.50 p. m.

[Major-General MEADE:]

General Martindale is now advancing his right, and the movement will be taken up successively along his line. The left division, commanded by General Neill, will be thrown forward in echelon, in order to keep up the connection with General Gibbon.

CHAS. E. CADWALADER.

GENERAL MARTINDALE'S HEADQUARTERS, June 18, 1864 - 3.35 p. m.

Major-General MEADE:

I have made the attempt to advance immediately in front, but have found it impossible to proceed, in account of an enfilading fire on the