OR, Series 1, Vol. 2, Page 470

Headquarters Army of the Potomac
Fairfax Court House
October 14, 1861
 
Secretary of War
 
Sir,
   I have the honor to submit to the honorable Secretary of War a report of the operations of the troops under my command, which terminated in the battle of Manassas.
   I assumed command at Harper's Ferry on the 23d of May. *****
   On the morning of the 13th of June information was received from Winchester that Romney was occupied by two thousand Federal troops, supposed to be the vanguard of McClellan's army. Col. A. P. Hill, with his own (Thirteenth) and Colonel Gibbons' (Tenth) Virginia Regiments, was dispatched by railway to Winchester. He was directed to move thence towards Romney, to take the best position and best measures to check the advance of the enemy. He was to add to his command the Third Tennessee Regiment, which had just arrived at Winchester. During that day and the next the heavy baggage and remaining public property were sent to Winchester by the railway {Winchester & Potomac RR}, and the bridges on the Potomac destroyed.
   On the morning of the 15th the Army left Harper's Ferry for Winchester. *****
   On the morning of the 16th intelligence was received that General Patterson's army had crossed the Potomac at Williamsport; also, that the United States force at Romney had fallen back. ***** The Army was ordered to gain the Martinsburg turnpike by a flank movement to Bunker Hill, in order to place itself between Winchester and the expected advance of Patterson. On hearing of this, the enemy recrossed the river precipitately.
   Resuming my first direction and plan, I proceeded to Winchester. There the Army was in position to oppose either McClellan from the west or Patterson from the northeast, and to form a junction with General Beauregard when necessary. *****
   Intelligence from Maryland indicating another movement by Patterson, Colonel Jackson, with his brigade, was sent to the neighborhood of Martinsburg to support Colonel Stuart. ***** Colonel Jackson was instructed to destroy such of the rolling stock of the Baltimore & Ohio Railroad as could not be brought off, and to have so much of it as could be made available to our service brought to Winchester.
   ***** On the 2d of July General Patterson again crossed the Potomac. Colonel Jackson, pursuant to instructions, fell back before him. *****
   Upon this intelligence the Army, strengthened by the arrival of General Bee and Colonel Elzey and the Ninth Georgia Regiment, was ordered forward to the support of Jackson. It met him at Darkesville, six miles from Martinsburg, where it took up a position for action, as General Patterson, it was supposed, was closely following Colonel Jackson. We waited for him in this position four days, hoping to be attacked by an adversary at least double our numbers, but unwilling to attack him in a town so defensible as Martinsburg, with its solid buildings and inclosures of masonry. Convinced at length that he would not approach us I returned to Winchester, *****
   On the 15th of July Colonel Stuart reported the advance of General Patterson from Martinsburg. He halted, however, at Bunker Hill, nine miles from Winchester, where he remained on the 16th. On the 17th he moved to his left to Smithfield. This created the impression that he intended to attack us on the south, or was merely holding us in check while General Beauregard should be attacked at Manassas by General Scott. About I o'clock on the morning of July 18 I received from the Government a telegraphic dispatch informing me that the Northern Army was advancing upon Manassas, then held by General Beauregard, and directing me, if practicable, to go to that officer's assistance. ***** I at once determined to march to join General Beauregard. ***** Evading him by the dispositions made of the advance-guard, under Colonel Stuart, the Army moved through Ashby's Gap to Piedmont, a station of the Manassas Gap Railroad. Hence the infantry were to be transported by the railway, while the cavalry and artillery were ordered to continue their march.
   I reached Manassas about noon on the 20th, preceded by the Seventh and Eighth Georgia Regiments and by Jackson's brigade, consisting of the Second, Fourth, Fifth, Twenty-seventh, and Thirty-third Virginia Regiments. I was accompanied by General Bee, with the Fourth Alabama, the Second, and two companies of the Eleventh Mississippi. The president of the railroad company {Manassas Gap RR} had assured me that the remaining troops should arrive during the day. *****
   Most respectfully, your obedient servant,
J. E. Johnston
General

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