The soldiers had to walk through deep snow, and the unfamiliar use of snowshoes was a great trial to the Europeans. At night, no shelter! They had to sleep in the open air, under the canopy of the sky and the cold light of the glimmering stars. Having no guides, Courcelle and his men lost their way in that unknown country. After seventeen days of extreme toil they found that, instead of reaching the Mohawk district, they were near Corlaer in the New Netherlands, sixty miles distant. The vanguard had a brush with two hundred Iroquois, who slipped away after killing six French soldiers and leaving four of their own number dead. The governor could go no farther with his exhausted troops and was forced to retrace his steps. The retreat was worse than the forward march. The supply of provisions failed, and to the suffering from cold was soon added hunger. Many soldiers died of exposure and starvation. In reading the account of the ill-fated expedition, one is reminded of the disastrous retreat of Napoleon's army in 1812 through the icy solitudes of Russia. By this sad experience the military commanders of New France found that they had something to learn of the art of making war in North America, and must respect the peculiarities of the climate and country. Nevertheless Courcelle's winter expedition had made an impression on the minds of the Iroquois and had even surprised the Dutch and the English. The author of a narrative entitled Relation of the March of the Governor of Canada into New York wrote: 'Surely so bold and hardy an attempt hath not happened in any age.'