Question: Who achieved a victory at the battle of marathon?
Disambiguated questions and answers: question: What country achieved a victory at the battle of marathon?
What commanders achieved a victory at the battle of marathon?
answer: Greece
Miltiades Callimachus, Aristides the Just, Xanthippus, Themistocles, Stesilaos, Arimnestos, and Cynaegirus
Natural Questions answer: Greece (from the Wikipedia article "Battle of Marathon")