...iately put in position by General Sickles to the left of the Third corps, and General Sykes was desired to relieve Ward's brigade and Smith's battery on the Roundtop, and hold the line from thence to Birney 's left, (First division, Third corps.) Strange to say, this movement was not promptly carried out, and there was imminent danger of losing the Roundtop, for Longstreet was making desperate exertions ...