Year 1203 (MCCIII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. It was also the first year to have all digits different from each other since 1098. Events By place Fourth Crusade April 20 – The Crusader army evacuates Zadar, and sets sail to Corfu; Boniface of Montferrat and Doge Enrico Dandolo stay behind to await Prince Alexios Angelos. After a brief pause at Durrës (modern Albania), the fleet reaches Corfu. Meanwhile, news of its approach (through spies) has reached Emperor Alexios III (Angelos) at Constantinople. He gives order to strengthen the city walls and the fortifications. May – June – The Crusader fleet rounds Greece and stops at Negroponte (modern-day Halkis), where the local authorities submit to Alexios Angelos. Encouraged by this, the Crusader leaders send him and several ships to extend his authority over the neighboring island of Andros. Mid-June, the Crusader fleet sails from Greece to Abydos, where it enters the Dardanelles. June 23 – The Crusader fleet comes within sight of Constantinople, and enters the Bosporus. The Byzantine capital is defended by a garrison of 15,000 soldiers (including 5,000 men of the Varangian Guard), and a fleet of 20 galleys. On June 26, the Byzantine troops skirmish with the Crusader forces, who attack, without success, the cities of Chalcedon and Chrysopolis.Steven Runciman (1952). A History of The Crusades. Vol III: The Kingdom of Acre, p. 100. . July 2 – Crusader leaders sail close to the city's walls in order to display the young Alexios Angelos, where they call upon the Byzantines to rise up in his favour. After rowing back and forth for a while, receiving insults and missiles, the attempt is abandoned. The Crusader leadership decides to land an invasion force north of Galata – using prevailing currents and winds. July 5 – The Crusader fleet disembarks their horse transports, and barrels down upon the Byzantine defenders in a full cavalry charge. The Byzantines flee after brief combat, and retreat to the Tower of Galata, where they fortify themselves. After a bitter struggle, the Crusaders capture the tower and break the floating chain, and allow their fleet to enter the Golden Horn. Siege of Constantinople: The Crusaders, led by Boniface of Montferrat, capture Constantinople, in support of the deposed Emperor Isaac II and his son Alexios Angelos. This marks the main outcome of the Fourth