Again Grant was on the road to Richmond, but in crossing the North Anna River he left an opening between the two wings of his army and before he could close it Lee threw his whole force into the breach and, completely cutting off one part of the Union army from the other, held both firmly in check. This masterly move might have brought Grant's campaign to a disastrous end, but just as he was planning to take full advantage of it, Lee fell ill and during his absence from the field Grant made his first backward move, recrossing the North Anna River and, bringing the two wings of his army together, rescued it from its perilous position. The moment he reached a point of safety, however, the persistent commander recommenced his march by the left flank, sidling once more toward Richmond until he reached Cold Harbor, only eight miles from the Confederate capital. Here Lee once more interposed his battered forces, strongly intrenching them in a position that fairly defied attack. With any other adversary against him he would have concluded that the game was won, for by all the rules of war the Union army was completely balked and could not avoid a retreat. But Grant was a man of a different caliber from any he had encountered heretofore. In spite of checks and disasters and unheard-of slaughter he had pushed inexorably forward; foiled in front he had merely turned aside to hew another bloody path. To him defeat only seemed to mean delay, and apparently he could not be shaken from his dogged purpose, no matter what the cost. At Cold Harbor, however, the Confederate position was so strong that to assault it was madness, and Lee could not believe that even his grim opponent would resort to such a suicidal attempt. But retreat or attack offered no choice to Grant's mind, and on June 2, 1864, the troops were fiercely hurled against the Confederate works, only to be repulsed with fearful slaughter. A few hours later orders were issued to renew the assault, and then postponed for a day. That delay gave the soldiers an opportunity to understand the desperate nature of the work that lay before them and, realizing that charging against murderous batteries and trenches meant rushing into the jaws of death, they offered a silent protest. Not a man refused to obey orders, not one fell from his place in the line, but to their coats they sewed strips of cloth bearing their names and addresses so that their bodies might be identified upon the field.