In a misguided attempt to shore up defences in the east, the Emperor Romanos IV Diogenes set out from Constantinople with a large army, meeting with disaster in 1071 at Manzikert where the Byzantine forces were caught by surprise and humiliated. In a famous battle still celebrated today as the moment of the birth of the state of Turkey, the imperial army was surrounded and crushed and the Emperor taken prisoner. The Seljuk ruler, Alp Arslan, made the Byzantine leader lie on the ground and placed his foot on his neck.