actually the whole "homosexuality-amongst-Greek-soldiers" angle is being waaaaaay overplayed...
sure there must have been some such symptoms especialy amongst Spartans, or the Thebean sacred band who lived confined in their prison-like-camps for years and years... but most other hoplites took regular leaves and experienced extensive periods of peaceful citizen-life cultivating their lands and the presence of plenty womanfolk around (no need to get physical with males ) ...
the whole "mature protector-young protege" thing is widely misunderstood... those societies were highly antagonistic,competitive and violent so young guys seeked the guidance and protection of mature men to better cope with the everyday challenges of politics and war ... this reationship was not of "sexual" nature but rather a means to train and teach and ensure societal emancipation... power and not sex was the underlying principle of these practices ... eastern societies still give great importance to similar ideas of "Godfather" and so is "Mentorship" in academia...