This is an interesting map of Xenophon’s Anabasis and the March of the Ten Thousand. Actually they were originally 13,000 Greek mercenaries under the command of Clearchos and then under the famous Xenophon.

In order to understand their accomplishment – a huge task taking into account the historical period and the very hostile environment (natural and human) – all we have to do is

make a list of the lands that these stiff-necked mercenaries had to cross and the wild tribes that they had to fight: from all over the Aegean, they gathered in Sardeis (Lydia) and then marched through Phrygia, Lycaonia, South Cappadocia, Cilicia,  Syria, Mesopotamia to Cunaxa. And from there, after the battle of Cunaxa, they had to march through Eastern Mesopotamia, Assyria, the Carduchi lands, Armenia and then through the wild tribal lands of the Phasiani, Taochi, Chalybes, Makrones, Colchi and other lesser peoples in order to reach the Black Sea shoreline. And from there, through the Hellenic colonies of the region, they finally sailed by the coastline of  Pontian Cappadocia (later called just “Pontos”), Paphlagonia, Bithynia, the Bosporos Straits, the Propontis Sea and the Hellespont to reach Greece.