While Darius had been thus advancing to the northward into the latitude where he knew that Alexander must cross the rivers, Alexander himself, and his small but compact and fearless body of Grecian troops, were moving eastward, toward the same region to which Darius's line of march was tending. Alexander at length reached the Tigris. He was obliged to ford this stream. The banks were steep and the current was rapid, and the men were in great danger of being swept away. To prevent this danger, the ranks, as they advanced, linked their arms together, so that each man might be sustained by his comrades. They held their shields above their heads to keep them from the water. Alexander waded like the rest, though he kept in front, and reached the bank before the others. Standing there, he indicated to the advancing column, by gesticulation, where to land, the noise of the water being too great to allow his voice to be heard. To see him standing there, safely landed, and with an expression of confidence and triumph in his attitude and air, awakened fresh energy in the heart of every soldier in the columns which were crossing the stream.