The Battle of Qadisiyyah
In the Name of Allâh, the Most Beneficent, the Most Merciful
The victory of Qadisiyyah heralded the downfall of the Sasanian Dynasty, paved the way for the conquest of Iraq and quickened Islamic expansion into Persia (Iran) and beyond. The Iranians had 240,000 troops, but the Muslims with about 30,000 soldiers still drove the Iranian Empire, one of the superpowers of the day, into the ground. 
