of a mile downstream that would be suitable for the infantry to cross. Brig. Gen. Wade Hampton found a closer point at which a simple bridge could be built for infantry. Jackson ordered him to build the bridge, but took no specific action to cross the swamp, having decided that it was infeasible to attack if he could not cross his artillery. While the artillery duel across the swamp escalated to over 40 guns, and while the battle at Glendale raged less than away, Jackson sat beneath a large oak tree and fell asleep for over an hour. Aftermath Jackson's inaction allowed some units to be detached from Franklin's corps in late afternoon to reinforce the Union troops at Glendale. Jackson did not inform Lee of his situation and Lee did not send anyone to find Jackson until it was too late to make a difference. Although Jackson's wing of the Army and Franklin's corps comprised tens of thousands of men, the action at White Oak Swamp included no infantry activity and was limited to primarily an artillery duel. The Confederates lost 3 artillerymen killed and 12 wounded, but there is no exact record of the number of Union casualties; historian Brian K. Burton estimates as many as 100 Union casualties, with the highest losses in the 5th New Hampshire, which had 5 men killed and 9 wounded. After dinner with his staff that night, Jackson fell asleep again, with a biscuit clenched between his teeth. Upon awakening he announced, "Now, gentlemen, let us at once to bed, and rise with the dawn, and see if tomorrow we can do something." Two weeks later he offered an explanation for his unusually lethargic conduct at the battle: "If General Lee had wanted me, he could have sent for me." Lee never criticized Jackson's performance in the battle. Edward Porter Alexander, the prominent Confederate artillery commander and postwar historian, lamented about the great lost opportunity at Glendale and White Oak Swamp: "When one thinks of the great chances in General Lee's grasp that one summer afternoon, it is enough to make one cry ... to think that our Stonewall Jackson lost them." See also Troop engagements of the American Civil War, 1862 List of costliest American Civil War land battles Richmond in the Civil War Virginia in the American Civil War List of American Civil War battles List of Virginia Civil War