Standing directly behind the boulder which holds the Signal Corps Monument, 
  you can see most of the signal station sites that were in use on the field. 
  The sites on Culp's Hill and Power's Hill are now obscured by timber. Take 
  your compass and sight the signal stations from left to right as follows: 
  Jack's Mountain - 265 degrees, Meade's Headquarters 35 degrees, Cemetery Hill 
  - 36 degreesi Culp's Hill 44 degrees, Power's Hill - 50 degrees- Although the 
  exact location of some of the Gettysburg signal sites are difficult to 
  pinpoint, it is well documented that the Little Round Top station was the 
  boulder holding the tablet and the one right behind it. 
[E. B. Cope, Engineer,Letter,
 War Department Gettysburg National Park 
  Commission,
Gettysburg, January 10, 1900.]
The history of the Signal Monument 
  is available for review at the National Park Service Library in the Cyclorama 
  building.
Report of Capt. Lemuel B. Norton,
Chief Signal Officer,
Army of the Potomac.
       A station was established upon Round Top Mountain, on the left 
    of our line, and from this point the greater part of the enemy's forces 
    could be seen and their movements reported. From this position, at 3.30 
    P.M., the signal officer discovered the enemy massing upon General Sickles 
    left, and reported the fact to General Sickles and to the general commanding.
       At 5.30 P.M. the enemy opened a terrific fire, but our left was fully 
    prepared for them, and the fight gradually extended to the whole front, so 
    that every signal flag was kept almost constantly working. The station at 
    Round Top was once, and that at General Meade's headquarters twice, broken 
    up by the rapid advance of the enemy and the severity of the fire, but were 
    immediately reoccupied when the positions became tenable. 
[O.R., XXVII, Part I, p. 202.]
       Much of the importance of 
  the Round Top signal station came from the fact that its mere presence caused 
  a delay in the employment of Longstreet's Corps on 2 July. The statior was the 
  direct cause of Longstreet's countermarch. Maj. Gen. Lafayette McLaws, one of 
  Longstreet's division commanders, recounts Longstreet's decision to 
  countermarch:
       Suddenly, as we rose a hill on the road we were taking the 
    [Little] Round Top was plainly visible, with the flags of the signal men in 
    rapid motion. I sent back and halted my division and rode with Major 
    Johnston rapidly around the neighborhood to see if there was any road by 
    which we could go to into position without being seen. Not finding any I 
    joined my command and met General Longstreet there, who asked "What is the 
    matter?" I replied, "Ride with me and I will show you that we can't go on 
    the route, according to instruction, without being seen by the enemy." We 
    rode to the top of the hill and he at once said, "Why this won't do. Is 
    there no way to avoid it?" I then told him of my reconnaissance in the 
    morning, and he said: "How can we get there?" I said: "Only by going back by 
    counter marching-" He said: "Then all right," and the movement commenced. 
    But as General Hood, in his eagerness for the fray (and he bears the 
    character of always being so), had pressed on his division behind mine so 
    that it lapped considerably, creating confusion in the countermarch, General 
    Longstreet rode to me and said: "General, there is so much confusion, owing 
    to Hood's division being mixed up with yours, supposed you let him 
    countermarch first and lead in the attack-" I replied: "General, as I 
    started in the lead, let me continue so;" and he replied, "Then go on," and 
    rode off. 
[Lafayette McLaws, "Gettysburg," Southern Historical Society Papers, Vol. 
    VII, p. 69.]
       Take your compass and sight a red barn and metal 
  silo at 308 degrees. This is the location where the above conversations 
  between McLaws and Longstreet took place. You can see that McLaws was correct 
  in his assertion that he couldn't continue without being seen by the signalmen 
  at this station.
    Col. E. P. Alexander, in charge of Longsteet's artillery and the founder of 
  the Confederate signal service, comments on the significance of the Round Top 
  signal station:
       Ewell's corps, holding the extreme left, was to attack the 
    enemy's right on hearing Longstreet's guns. Longstreet was directed, in his 
    march, to avoid exposing it to the view of a Federal signal station on 
    Little Round Top Mountain.
       Meanwhile, on the arrival of Longstreet's reserve artillery in the 
    vicinity of the field. I had been placed in charge of all the artillery of 
    his corps, and directed to reconnoitre the enemy's left and to move some of 
    the battalions to that part of the field. This had been done by noon, when 
    three battalions, - my own, Cabell's and Henry's - were located in the 
    valley of Willoughby Run awaiting the arrival of the infantry. Riding back 
    presently to learn the cause of their non-arrival, the head of the infantry 
    column was found halted, where its road became exposed to the Federal view, 
    while messages were sent to Longstreet, and the guide sought a new route. 
[E. P. Alexander, Military Memoirs of a Confederate, New York,Charles 
  Scribner's Sons, 1910, pp. 391-392.]
       The Round Top signal station was used by a number of two man signal 
  detachments representing the various corps to which they were temporarily 
  attached. A review of the message traffic indicates that Buford's signal 
  officer, Lieutenant Jerome, was the first to use the station on the second day 
  of the battle. 
The following messages were sent before noon on 2 July:
Mountain Signal Station
July 2, 1863, 11.45 A.M.
    Gen. Butterfield:
       Enemy's skirmishers are advancing from the west, one 
    mile from here.
Jerome,
Lieut., Signal Officer
Round Top Mountain Signal Station
July 2, 1863, 11.55 A.M.
    Gen. Butterfield:
       The rebels are in force, and our skirmishers give 
    way. One mile west of Round Top Signal station the woods are full of them.
Jerome,
Lieut., Signal Officer
[O.R., XXVII, Part III, p. 488.]
| |  James Hall
 | 
 | 
       Jerome, attached specifically to support Buford's 
  division, evidently left the station when the division was pulled from Little 
  Round Top.
       In view of the following message, it is probable that that the Chief Signal 
  Officer, Capt. Norton, joined Capt. P. A. Taylor at the Little Round Top 
  station. He brought the station to the attention of Capt. James Hall who along 
  with Taylor was attached to the Second Corps. You will note that although 
  Norton tells Hall that Little Round Top is a good observation station, he does 
  not direct him to occupy it. This message is typical of the indirect methods 
  Norton employed in fulfilling his duties as Chief Signal Officer.
Round Top Mountain Signal Station
July 2, 1863.
    Capt. Hall:
       Saw a column of the enemy's infantry move into woods on 
  ridge, three miles west of the town, near the Millerstown road. Wagon teams, 
  parked in open field beyond the ridge, moved to the rear behind woods. See 
  wagons moving up and down on the Chambersburg pike, at Spangler's. Think the 
  enemy occupies the range of hills three miles west of the town in considerable 
  force.
Norton, M.
Taylor, M.
Signal Officers
[P.S.]-This is a good point for 
  observation.
[O.R., XXVII, Part III, p. 489.]
       Although the Second Corps signal party evidently did not render a specific 
  report of their Little Round Top activities, the available message traffic 
  indicates that Hall joined Taylor on the Round Top Station by at least 1:30 
  P.M.on the second of July. There are a number of opinions as to the utility of 
  Capt. Hall's actions which vary from his "saving the day", expressed by fellow 
  signalmen, to that he contributed to the problem by presenting confusing 
  information to Generals Butterfield and Meade.
       J. Willard Brown, an enlisted signalman during the war and the postwar 
  historian of the U.S. Veteran Signal Corps Association, gives Hall much of the 
  credit for saving Little Round Top. According to Brown, Hall was responsible 
  for sending messages which caused Warren to visit the station, and then had to 
  convince the general that the Confederate troops were concealed in front to 
  the position. 
Brown elaborates:
       It was Capt. Hall's announcement that the enemy were moving 
    around Sickles's left that brought Gen. Warren to Little Round Top. When he 
    reached the station the enemy were under cover, and were scarcely visible 
    except to-eyes accustomed to the use of the field-glass. Capt. Hall found it 
    very difficult to convince Gen. Warren that the enemy's infantry and 
    artillery were there concealed. While the discussion was in progress the 
    enemy opened on the station. The first shell burst close to the station, and 
    the general, a moment later, was wounded in the neck. Capt. Hall then 
    exclaimed, "Now do you see them?"
[J. Willard Brown,
Signal Corps, U.S.A. in the War of the Rebellion,
New 
  York, Arno Press, 1974, p. 367.]
       Although Hall's version of the account is certainly interesting, his 
  credibility may be suspect. Hall was the Vice President of the Veteran Signal 
  Corps Association and was a protege of Brown's. They visited the station on 
  Little Round Top on July 2, 1888, along with John Chemberlin who was Hall's 
  flagman, during an annual reunion of the organization. [Minutes of The 
  Thirteenth Annual Reunion of the U.S. Veteran Signal Corps Association, held 
  at Gettysburg, Pa., July 2 and 3, 1888.] Hall's version was probably recounted 
  to Brown during that reunion, 25 years after the actual event, and was almost 
  certainly colored by time and parochialism.
       Harry W. Pfanz, a modern student of the battle, believes that the messages 
  which Hall sent to General Butterfield contributed to the confusion as to the 
  Confederate activity on the left. He postulates that the signal station could 
  have done a better job providing the Army with information.
[Harry W. Pfanz,
Gettysburg: The Second Day,
The University of North 
  Carolina Press, 1987, pp. 141-142.]
Hall sent the following traffic from Little Round Top on July 2, 1863:
Round Top Mountain Signal Station,
July 2, 1863, 1.30 P.M.
    Gen. Butterfield:
       A heavy column of enemy's infantry, about ten 
  thousand, is moving from opposite our extreme left toward our right.
HALL,
Officer, Signal Capt.
Round Top Mountain Signal Station,
July 
  2, 1863, 2.10 P.M.
    Gen. Butterfield:
       Those troops were passing on a by-road from Dr. Hall's 
  House to Herr's tavern, on the Chambersburg pike. A train of ambulances is 
  following them.
[O.R., XXVII, Part III, p. 488.]
       Capt. Hall's party departed the station at some point in the afternoon and 
  left the station without a signal party. According to Brown, Col. Morgan 
  ordered Capt. Hall to report to Gen. Sedgwick.
[J. Willard Brown,
Signal Corps, U.S.A. in the War of the Rebellion,
New 
  York, Arno Press, 1974, p. 366.]  
       That the Round Top Signal station reported information on the disposition 
  of Confederate troops prior to Longstreet's assault on Sickles is confirmed by 
  Brig. Gen. Gibbon's aide, Lieut. Frank A. Haskell. Lieut. Haskell's "letter" 
  tells us:
       About noon the Signal Corps, from the top of Little Round Top, with their 
  powerful glasses, and the cavalry at the extreme left, began td report the 
  enemy in heavy force, making disposition of battle. to the West of Round Top, 
  and opposite to the left of the Third Corps.
[Frank A. Haskell, The Battle of Gettysburg,
Edited by Bruce Catton, 
  Boston, Houghton Mifflin Company, 1958, p.31.]
       The third signal party to assume position on Little Round Top was that of 
  Capt. E. C. Pierce of the Sixth Corps. At the time Capt. Pierce and his 
  detachment arrived, Capt. Hall had departed the site.
| |  Edward C. Pierce
 | 
 | 
Report of Capt. E. C. Pierce, Signal Officer, Sixth Army Corps
       The 6th Corps reached Gettysburg at 2 o'clock p.m., July 2nd, 
    after a continuous march of nineteen hours. After resting three hours, 
    orders were given for the corps to proceed to the extreme left of our line 
    and engage the enemy.
       Lieut. Geo. J. Clarke and myself assisted Gen. Sedgwick and staff in 
    forming the line of battle, and getting the troops in position, as the tide 
    of battle appeared to turn upon the celerity with which the 6th Corps was 
    engaged. The splendid manner in which our first line went in to the fight 
    fairly turned the tide, and at dusk we had repulsed the enemy at all points. 
    Before that consummation, we had learned that a signal station had been 
    abandoned by some signal officers as impracticable. It being described to us 
    a splendid post of observation, we determined to occupy it. The position, as 
    we eventually found it, was a pile of rock on our left and a little to the 
    right of the place occupied by Hazlett's battery. From it a magnificent view 
    of the entire battlefield could be had, extending from the cemetery, on our 
    right, to the Emmitsburg road on the left. We remained there during the 
    night.
       July 3. At daylight we commenced making observations, the results of 
    which we reported by orderlies, to Major-Generals Meade, Sedgwick, Sykes, 
    Hancock, Birney, Pleasonton, Newton, etc.
       Headquarters signal station was in plain sight all the time, and we could 
    hence call it, but not without exposing the lives of our men to the 
    deliberate aim of the enemy's sharpshooters, who, stationed behind rocks, in 
    tops of trees, etc., fired with fatal effect upon all that showed 
    themselves. They kept two guns of Hazlett's battery silent, except when 
    worked by volunteers, and kept up a continual fire upon the rock, not ten 
    feet square, occupied by us. Seven men, including officers, who were drawn 
    there by curiosity, were killed or severely wounded by the combined fire of 
    the sharpshooters and artillery. About 11 A.M. we were joined by Lieutenants 
    Wiggins and Camp, who agreed with us upon the impossibility of employing 
    flag signals, and consequently we continued to report by orderlies.
       About 3 P.M., the enemy opened fire with all their artillery upon our 
    lines, and the necessity of sending orderlies increased as'Gen. Warren, 
    Chief of Engineers on Gen. Meade's staff, who came to our station at 2 
    o'clock, p.m. directed us to keep a lookout on certain points, and to send 
    messages every few minutes to Gen. Meade during the day. In this connection, 
    I wish particularly to place upon record the fact that the signalmen 
    attached toLieut. Wiggin's party and mine are worthy of all commendation for 
    the bravery displayed by them in riding to and for, through an unexampled 
    artillery fire, with important messages. During the afternoon of this day, 
    after the enemy were repulsed from our right and centre, Major-Generals 
    Meade, Sedgwick, Sykes, Pleasonton, etc., visited our station, and remained 
    there until Gen. Crawford's division drove the enemy and sharpshooters from 
    their position.
       July 4th. We opened communication by flag signals with headquarters 
    station and made constant reports of the movements of the enemy. At 4 
    o'clock P.M., Lieutenants Wiggins and Camp reported back to Ist Corps by 
    order of Gen. Newton-"
[Capt. E. C. Pierce, report,
quoted in J. Willard Brown,
Signal Corps, 
    U.S.A. in the War of the Rebellilon,
New York, Arno Press, 1974, pp. 361-362]
 
Diary entry of Sergeant Luther C. Furst, USA, Flagman, 
  Sixth Army Corps
| |  Luther C. Furst
 | 
 | 
       July 2d, 2 P.M. We have just made the second halt for orders. We 
    are now within four miles of Gettysburg. After a short rest advanced again. 
    Got up to our line of battle about 4 P.M., having made a march of thirty-six 
    miles, the longest rest being one hour. We immediately reinforce our troops 
    upon the left, they being pressed very hard. We just reach the conflict in 
    time to make secure the Round Top Mountain to our forces. The fight now 
    became general along the lines extending to Gettysburg, which is plainly 
    visible from this point. Our forces have been able to hold their positions 
    at every point. The 6th Corps came up the Round Top Mountain six lines deep, 
    secured and made safe our position on little Round Top. We immediately 
    established the signal station on the crest, the other signal officers 
    having deemed it impracticable.
       July 3rd. Were up before daylight. Began to signal in direction of 
    Gettysburg at daybreak. Held our station all day, but were much annoyed by 
    the enemy's sharpshooters in and near the Devills Den. Have to keep under 
    cover to protect ourselves. The large rocks piled up all around us serve as 
    good protection- Today there have been seven men killed and wounded near our 
    station by the enemy's sharpshooters: hundreds on all sides of us by the 
    enemy's severe cannonading. Up to near noon there has been considerable 
    skirmishing along the line. A little later the whole of the artillery on 
    both sides opened up and shell flew fast and thick. A good many have been 
    struck near our station, but we are able to keep up communication. The fight 
    upon the right is said to have been very severe, but our trooos have held 
    their positions and repulsed the enemy at every point. The loss of the 6th 
    Corps has not been great, owing to the advantageous and protected position. 
[Sergeant Luther C. Furst, Diary entry,
quoted in J. 
  Willard Brown, Signal CorDs, U.S.A. in the War of the Rebellion,
New York, 
  Arno Press, 1974, pp. 362 - 364]
       As described by both Capt. Pierce and Sgt. Furst, on the third of July, 
  this station was under such fire that it lost its utility as a station of 
  communications but remained a station of observation. Messengers were used to 
  relay the information obtained by the signal parties to the army headquarters. 
  Historian George R. Stewart tells us: "Pickett began his advance from the 
  bottom of a swale, and for several minutes his lines moved forward without 
  anyone on Cemetery Ridge being able to see them. Almost at once, however, his 
  two front brigades came under observation from Little Round Top, and the alert 
  men of the Signal Corps sprang into action. The Vermonters of Stannard's 
  brigade, occupying low ground, knew that the attack was launched before they 
  saw a Confederate Flag or soldier."
[George R. Stewart, Pickett's Charge,
Boston, Houghton Mifflin Company, 
  1959, p. 179.]
       If Stewart is correct in his assertion that the Vermonters knew that 
  Pickett's brigades were underway, they must have received the information by 
  courier from this station.
       Now you should proceed to STOP 3. Return to TANEYTOWN ROAD (HWY 134) and 
  turn LEFT. Drive 1.4 miles and turn right on GRANITE SCHOOL HOUSE LANE. Drive 
  0.6 miles and stop along the road. You will see a monument in the woodline at 
  the base of a small hill to your left. This prominence is POWERS HILL. Walk to 
  the top of the hill and stop by the artillery battery monument. The hill is 
  heavily timbered, but in the late autumn and winter you can sight LITTLE ROUND 
  TOP at 235 degrees.