It is to bad the major religion of Iran is not still Zoroastrianism instead if the cult of mohammed!
I hate to break the news to you, but in its heyday Zoroastrianism was a militant religion, too, especially under the Sassanian or Neo-Persian Empire (226-651 A.D.). The reason why there are so few Zoroastrians today is because Islam proved it was even more aggressive.
A Sassanian knight, or clibanarius, with a standard bearer.