The irony of events, however, alike ignoring American consternation and British glee, showed that the capture of Ticonderoga was not to help the invaders in the least. On the contrary, it straightway became a burden, for it detained an eighth part of Burgoyne's force in garrison at a time when he could ill spare it. Indeed, alarming as his swift advance had seemed at first, Burgoyne's serious difficulties were now just beginning, and the harder he laboured to surmount them the more completely did he work himself into a position from which it was impossible either to advance or to recede. On the 10th of July his whole army had reached Skenesborough (now Whitehall), at the head of Lake Champlain. From this point to Fort Edward, where the American army was encamped, the distance was twenty miles as the crow flies; but Schuyler had been industriously at work with those humble weapons the axe and the crowbar, which in warfare sometimes prove mightier than the sword. The roads, bad enough at their best, were obstructed every few yards by huge trunks of fallen trees, that lay with their boughs interwoven. Wherever the little streams could serve as aids to the march, they were choked up with stumps and stones; wherever they served as obstacles which needed to be crossed, the bridges were broken down. The country was such an intricate labyrinth of creeks and swamps that more than forty bridges had to be rebuilt in the course of the march. Under these circumstances, Burgoyne's advance must be regarded as a marvel of celerity. He accomplished a mile a day, and reached Fort Edward on the 30th of July. [Sidenote: Schuyler wisely evacuates Fort Edward] [Sidenote: Enemies gathering in Burgoyne's rear]