Datis in the context of Nobility

A polemarch (/ˈpɒləˌmɑːrk/, from Ancient Greek: πολέμαρχος, polémarchos) was a senior military title in various ancient Greek city states (poleis). The title is derived from the words polemos ('war') and archon ('ruler, leader') and translates as 'warleader' or 'warlord'. The name indicates that the polemarch's original function was to command the army; presumably the office was created to take over this function from the king. The title held a high position in Athenian society, alongside the archon eponymos and the archon basileus. In Athens the polemarch was the commander-in-chief of the armed forces of the city-state.

The Battle of Marathon took place in 490 BC during the first Persian invasion of Greece. It was fought between the citizens of Athens, aided by Plataea, and a Persian force commanded by Datis and Artaphernes. The battle was the culmination of the first attempt by Persia under King Darius I to subjugate Greece. The Greek army inflicted a crushing defeat on the more numerous Persians, marking a turning point in the Greco-Persian Wars.

The first Persian invasion was a response to Athenian involvement in the Ionian Revolt, when the city-states of Athens and Eretria each sent a force to support the cities of Ionia in their attempt to overthrow Persian rule. The Athenians and Eretrians had succeeded in capturing and burning Sardis, but they were then forced to retreat with heavy losses. In response to this raid, Darius swore to burn down the two cities that had aided the failed revolt. According to Herodotus, Darius had his bow brought to him and then shot an arrow "upwards towards heaven", saying as he did so: "Zeus, that it may be granted me to take vengeance upon the Athenians!" Herodotus further writes that Darius charged one of his servants to say "Master, remember the Athenians" three times before dinner each day.

Artaphernes (Greek: Ἀρταφέρνης, Old Persian: Artafarna, from Median Rtafarnah), son of Artaphernes, was the nephew of Darius the Great, and a general of the Achaemenid Empire.

He was appointed, together with Datis, to take command of the expedition sent by Darius to punish Athens and Eretria for their support for the Ionian Revolt. Artaphernes and Datis besieged and destroyed Eretria, but were beaten by the Athenians at the Battle of Marathon in 490 BC.