"is there any evidence to suggest that hasanain

were in these armies????"
If you go according to some sources then they at least were there, even if maybe not in the army, because they afterwards married the daughters(2 sisters) of the king of persia, who were captives.
you know, a lot of history, especially Islamic history, is lost or unknown, especially that about Imam Hassan and Imam Hussains era. Omar was very clever and turned a lot into his favor. Persia at that time was fire worshippers with some Christians and Jews, according to some sources. So it's a wonder how Omar made them Muslims, while he himself did know nothing about Islam. I think, this must have been Imam Ali(a) who was farsighted and he knew well that even if not immediately but one day Persia would become Shia and the source of his pride, hopefully.
Omar is also well-known for being a racist. He hated everyone except for arabs, that's why the Prohet(s) reproached him for that. And as we all know racism/nationalism/tribalism is one of the worst kind of sins in Islam, loving and worshipping other than God.
Edited by Shiabro, 28 February 2012 - 03:56 AM.