had to be supplied from cisterns. Unfortunately for the Greeks, it was July and no rains were falling to fill the cisterns. Ypsilantis bluffed the Ottomans as long as he could, but towards the end of the month had to sneak his men out in the middle of the night. Dramali's men plundered the castle the next day, and he was now free to march them toward the coast to resupply (the Greeks had pursued a scorched earth policy, and the large Ottoman force was eating through its food supplies rather quickly). Ypsilantis's defense had bought Kolokotronis and the klephts valuable time. To his dismay, Dramali found himself cut off from his supply fleet, which had intended to land at Nafplio but was successfully blockaded by the Greek fleet under Admiral Andreas Miaoulis. Dramali reluctantly decided upon a retreat toward Corinth through the Dervenaki Pass, through which he had just come unmolested. This was exactly what Kolokotronis had been hoping for. In August 1822, his quicker-moving guerrilla forces trapped the Ottomans in the pass and annihilated them in the Battle of Dervenakia. A devastated Sultan Mahmud II in Constantinople was forced to turn to Muhammad Ali, ruler of the nominally Ottoman pashaluk of Egypt, for help. The Greeks resumed the siege against the fortresses at Nafplio, which fell in December. Kolokotronis is said to have ridden his horse up the steep slopes of Palamidi to celebrate his victory there; a statue in the town square commemorates the event. He is attired in the pseudo-classical uniform of the Greek Light Infantry, which he was fond of wearing. Parliamentary crisis From December 1823 to February 1825, he took part in the civil wars among the various Greek factions; when his party was finally defeated, he was jailed in Hydra with some of his followers in March 1825, and was released only when an Egyptian army under the command of Ibrahim Pasha invaded the Morea. His eldest son, Panos Kolokotronis, was killed during the second civil war. Against Ibrahim Ibrahim was fresh from fighting the Wahhabi rebels in Arabia, and so was used to fighting guerrillas. His troops were armed with the most modern equipment and trained by European experts. The sultan had promised his father the island of Crete as an appanage for young Ibrahim if he could crush the rebels. With his eye on the prize, he burned his way through