On the Sacred Band of Thebes (in honor of the repeal of DADT)

From Plato's Phaedrus:

And if there were only some way of contriving that a state or an army should be made up of lovers and their beloved, they would be the very best governors of their own city, abstaining from all dishonour, and emulating one another in honour; and when fighting at each other's side, although a mere handful, they would overcome the world. For what lover would not choose rather to be seen by all mankind than by his beloved, either when abandoning his post or throwing away his arms? He would be ready to die a thousand deaths rather than endure this. Or who would desert his beloved or fail him in the hour of danger?

From Plutarch's Life of Pelopidas:

Gorgidas, according to some, first formed the Sacred Band of three hundred chosen men, to whom, as being a guard for the citadel, the State allowed provision, and all things necessary for exercise: and hence they were called the city band, as citadels of old were usually called cities. Others say that it was composed of young men attached to each other by personal affection, and a pleasant saying of Pammenes is current, that Homer's Nestor was not well skilled in ordering an army, when he advised the Greeks to rank tribe and tribe, and family and family together, that-

"So tribe might tribe, and kinsmen kinsmen aid."

but that he should have joined lovers and their beloved. For men of the same tribe or family little value one another when dangers press; but a band cemented by friendship grounded upon love is never to be broken, and invincible; since the lovers, ashamed to be base in sight of their beloved, and the beloved before their lovers, willingly rush into danger for the relief of one another. Nor can that be wondered at since they have more regard for their absent lovers than for others present; as in the instance of the man who, when his enemy was going to kill him, earnestly requested him to run him through the breast, that his lover might not blush to see him wounded in the back. It is a tradition likewise that Iolaus, who assisted Hercules in his labours and fought at his side, was beloved of him; and Aristotle observes that, even in his time, lovers plighted their faith at Iolaus's tomb. It is likely, therefore, that this band was called sacred on this account; as Plato calls a lover a divine friend. It is stated that it was never beaten till the battle at Chaeronea: and when Philip, after the fight, took a view of the slain, and came to the place where the three hundred that fought his phalanx lay dead together, he wondered, and understanding that it was the band of lovers, he shed tears and said, "Perish any man who suspects that these men either did or suffered anything that was base."

It was not the disaster of Laius, as the poets imagine, that first gave rise to this form of attachment amongst the Thebans, but their lawgivers, designing to soften whilst they were young their natural fierceness, brought, for example, the pipe into great esteem, both in serious and sportive occasions, and gave great encouragement to these friendships in the Palaestra, to temper the manners and characters of the youth. With a view to this they did well, again, to make Harmony, the daughter of Mars and Venus, their tutelar deity; since, where force and courage is joined with gracefulness and winning behaviour, a harmony ensues that combines all the elements of society in perfect consonance and order.

Gorgidas distributed this Sacred Band all through the front ranks of the infantry, and thus made their gallantry less conspicuous; not being united in one body, but mingled with so many others of inferior resolution, they had no fair opportunity of showing what they could do. But Pelopidas, having sufficiently tried their bravery at Tegyrae, where they had fought alone and around his own person, never afterward divided them, but, keeping them entire, and as one man, gave them the first duty in the greatest battles. For as horses ran brisker in a chariot than singly, not that their joint force divides the air with greater ease, but because being matched one against the other emulation kindles and inflames their courage; thus he thought brave men, provoking one another to noble actions, would prove most serviceable, and most resolute, where all were united together.