GENERAL BUTLER'S HEADQUARTERS, June 28, 1864.

General BROOKS:

The Mounted Rifles not on detached duty were dismounted and ordered to report to you some days ago, and were, by your orders, [sent] to General Ferry. The balance of the two squadrons sent Smith are now with Ferry. I desire that your order the balance of these two companies to be relieved and ordered to join the rest of their command with Smith. Fourth Massachusetts was dismounted and sent to you to take the place of them.

R. S. DAVIS,

Assistant Adjutant-General.

HEADQUARTERS TENTH CORPS, June 28, 1864.

Major DAVIS,
Assistant Adjutant-General:

In your dispatch of the 26th instant two companies Mounted Rifles were ordered to report to General Smith. All the mounted men we had were sent. In exchange I find we have two companies Fourth Massachusetts, dismounted. Was that intended? I think the balance of the Mounted Rifles will be found in some of their camps, as the companies that reported here were not one-half full.

W. T. H. BROOKS,

Brigadier-General.

HEADQUARTERS TENTH ARMY CORPS, In the Field, June 28, 1864.

Brigadier General A. H. TERRY,
Commanding First Division:

Orders have been received to relieve all the men of Turner's division. You will please relieve those belonging to the brigade on your left. It will take about 200 men, as there are some dismounted cavalry there. Relieve immediately as many as can be relieved in the daytime.

By order of Brigadier-General Brooks:

ED. W. SMITH,

Assistant Adjutant-General.

HEADQUARTERS TENTH ARMY CORPS, In the Field, June 28, 1864.

Brigadier-General FERRY,
Commanding Third Division:

In obedience to orders from department headquarters, you will at once relieve all the men of General Turner's division, except the batteries, including the convalescents, and order them to report to General Turner, near Petersburg. For the present you must make 75 men relieve 100. Use your old men as far as they will go, and relieve on the left of your 100-days' men, reporting the deficiency at once. General Terry will be directed to relieve the men on your right.

By order of Brigadier-General Brooks:

ED. W. SMITH,

Assistant Adjutant-General.