Homosexuality in the militaries of ancient Greece was regarded as contributing to morale. Although the primary example is the Sacred Band of Thebes, a unit said to have been formed of same-sex couples, the Spartan tradition of military heroism has also been explained in light of strong emotional bonds resulting from homosexual relationships. Various ancient Greek sources record incidents of courage in battle and interpret them as motivated by homoerotic bonds.

The Sacred Band of Thebes was a troop of select soldiers, consisting of 150 pairs of male lovers which formed the elite force of the Theban army in the 4th century BC, ending Spartan domination. Its predominance began with its crucial role in the Battle of Leuctra in 371 BC. It was annihilated by Philip II of Macedon in the Battle of Chaeronea in 338 BC.

“Homosexuality in the Militaries of Ancient Greece.” Wikipedia, Wikimedia Foundation, 5 Sept. 2020, en.wikipedia.org/wiki/Homosexuality_in_the_militaries_of_ancient_Greece.