Original sentence: According to Roman sources they were stronge enough to face the Roman Legionaries.Byzantine army.Dailamites were an elite regiment of infantry in the late period of the Sassanid Empire ,these were heavy infantry orginating from Northern Iran.Derbent, the only surviving Sassanid fortress.During the Arab invasion of Iran the Dailamites put up large defence,and were eagerly welcomed into the ranks of the Arabs and they would be paid more than Arab men.Late Roman army.Persian war elephants.Roman-Persian Wars.Sassanid army.These warriors became the most finest infantry in Persia.They also gave a good account of themselves in the invasion of Yemen
Edited sentence: REDIRECT Dailam