In the spring of B.C. 480 Xerxes set out from Sardis with his vast host. Upon reaching Abydos on the Hellespont the army crossed over to Europe by the bridge of boats. Xerxes surveyed the scene from a marble throne. His heart swelled within him at the sight of such a vast assemblage of human beings; but his feelings of pride and pleasure soon gave way to sadness, and he burst into tears at the reflection that in a hundred years not one of them would be alive. Xerxes continued his march through Europe along the coast of Thrace. Upon arriving at the spacious plain of Doriscus, which is traversed by the river Hebrus, he resolved to number his forces. He found that the whole armament, both military and naval, consisted of 2,317,610 men. In his march from Doriscus to Thermopylae he received a still further accession of strength; and accordingly when he reached Thermopylae the land and sea forces amounted to 2,641,610 fighting men. The attendants are said to have been more in number than the fighting men; but if they were only equal, the number of persons who accompanied Xerxes to Thermopylae reaches the astounding figure of 5,283,220! The number is quite incredible; but though the exact number of the invading army cannot be determined, we may safely conclude, from all the circumstances of the case, that it was the largest ever assembled at any period of history. From Doriscus Xerxes his march along the coast through Thrace and Macedonia. The principal cities through which he passed had to furnish a day's meal for the immense host, and for this purpose had made preparations many months before-hand. The cost of feeding such a multitude brought many cities to the brink of ruin. At Acanthus his fleet sailed through the isthmus of Athos and after doubling the promontories of Sithonia and Pallene joined him at the city of Therma, better known by its later name of Thessalonica. Thence he continued his march through the southern part of Macedonia and Thessaly, meeting with no opposition till he reached the celebrated pass of Thermopylae.