On the morning of 21 August 1415, King John I of Portugal led his sons and their assembled forces in a surprise assault that would come to be known as the Conquest of Ceuta. The battle was almost anti-climactic, because the 45,000 men who traveled on 200 Portuguese ships caught the defenders of Ceuta off guard and suffered only eight casualties. By nightfall the town was captured. On the morning of 22 August, Ceuta was in Portuguese hands. Álvaro Vaz de Almada, 1st Count of Avranches was asked to hoist what was to become the flag of Ceuta, which is identical to the flag of Lisbon, but in which the coat of arms derived from that of the Kingdom of Portugal was added to the center; the original Portuguese flag and coat of arms of Ceuta remained unchanged, and the modern-day Ceuta flag features the configuration of the Portuguese shield.