Henry W. Halleck to George W. Schenck, June 18, 1863

Major-General ScHENCK, Baltimore, Md. : I have sent the main body of my cavalry down the railroad this morning. Means and Cole should have taken care of White yesterday. White has not.over 200 men. Noreport from Means and Cole. I hear from the railroad agent at Sandy Hook that the loss was one engine and seventeen cars. I learn from others that the train was sacrificed by carelessness and bad management. Car, XXXIX.] CORRESPONDENCE, ETC.—UNION. Do send back our cavalry which got into Pennsylvania; we require it. If I have this command, with all the cavalry which is said to have escaped into Pennsylvania, I can do something. I can do something here by keeping the cavalry between this and Winchester. I brought off 1 gun, 2 caissons, and 1 limber, 1 lieutenant, 48 men, and tain, got off toward Williamsport, which I doubt. All my disposable cavalry are on their way to the Monocacy. Captain Woodhull will return to Baltimore soon. He behaved gallaiitty at Martinsburg. The aggregate of Milroy’s men here is 1,558. A. N. TYLER, Brigadier-General. BALTIMORE, Mp., June 18, 1863—1 p. m. H. W. HAalveck, General-in-Chief : I have kept General Tyler instructed to have cavalry patrols constantly on the Potomac from Harper’s Ferry to the mouth of the Monocacy, but I have no infantry to guard ferries or fords. ROBT. C. SCHENCK, Major-General. (Copy to General Hooker.) HEADQUARTERS ARMY OF THE Potomac, June 18, 1863—2 p. m. General TyLER, Sandy Hook: We would like to know the names of all the generals that the risoner can give, no matter what their commands are. What does e think has become of Longstreet? Ewell commands Jackson’s old corps, with one division taken out to give to A. P. Hill. Rodes has a division under Ewell. Jones, Imboden, and Jenkins commanded small forces in the Valley price to the departure of Lee’s forces, and have doubtless joined well. Give us the name and locality certain at any time of any regiment of infantry. DANL. BUTTERFIELD, Major-General, Chief of Staff. Sanpy Hook, Mp., June 18, 1863—10 p. m. Major-General HooKER: I have information which I deem reliable that Rodes and his division were not in Williamsport yesterday, the 17th instant. I havea pass signed by him at that time, and countersigned to-day by Jones at Sharpsburg. Three regiments belonging to Jones’ division, and about 100 cavalry, passed over the ford, about 1 mile below Shepherdstown, at 4 0’cloc ara There was no artillery with them. Ihave reason to suppose that before these men passed the ford to-day, Jones had three regiments and some cavalry about three-quarters of a mile from Sharpsburg, on the road toward Antietam. 200 N. C., V. A. W. V. A., M. D., P. A., ETC. (CHar, XXXIX. To-day Jones is building a bridge over the canal, so as to cross right from the ford. This looks like preparations for the cavalr retrograde by and by, and I think it probable Ewell may fall bac on the arin chester line; at all events, it looks like it. This moment the signal officer reports camp fires in the direction of Williamsport. This bridge is significant. He cannot use it now, as his troops have already passed. It is represented to be constructed with very heavy sills, and he was hauling planks to cover it with. My impression is that Jones means to hold this position until he sees if Ewell will require it in any retrograde he may make. In other words, I think Jones is remaining here to cover Ewell’s possible retreat. Will investigate to-morrow. DAN. TYLER, Brigadier-General. JUNE 18, 1863—10 p. m. Major-General SCHENCK : General Hooker requests that you will advise him where your troops are stationed, their character, and number. DANL. BUTTERFIELD, Major-General, Chief of Staff. Washington, D. C., June 18, 1863. Major-General SCHENCK, Baltimore, Md. : General Heintzelman’s scouts, in the vicinity of Poolesville, have reported no enemy in force. Anything that occurs there will be reported to you.

H. W. HALLECK,