Epirus was now fallen, and nothing remained but a guerilla warfare. Indeed, a striking feature of the whole revolution was "the absence of any one great leader to concentrate the Greek forces and utilize the splendid heroism of people and chieftains in permanent strategic successes. The war was a succession of sporadic fights,--successes and failures,--with small apparent mutual relations and effects." In Macedonia, which had joined the insurrection, there were six thousand brave mountaineers in arms; but they had to contend with fifteen thousand regular troops under the command of the pashas of Salonica and Thessaly, who forced the passes of the Vale of Tempe, and slew all before them. Chourchid Pasha, having his rear provided for, with thirty thousand men now passed through the defile of Thermopylae, appeared before Corinth, took its citadel, advanced to Argos, dispersed the government which had established itself there, and then pursued his victorious career to Napoli di Romania, whose garrison he reinforced. But the summer sun dried up the surrounding plains; there was nothing left on which his cavalry could feed, or his men either, and he found himself in a perilous position in the midst of victory. The defeated Greeks now rallied under Ypsilanti and Kolokotronis, who raised the siege of Corinth, and advanced against their foes with twelve thousand men. The Turkish army, decimated and in fear of starvation, resolved to cut their way through the guarded defiles, and succeeded only by the loss of seven thousand men, with all their baggage and military stores. The Morea was delivered from the oppressor, and the Turkish army of thirty thousand was destroyed. Chourchid Pasha was soon after seized with dysentery, brought about by fatigue and anxiety, to which he succumbed; and the ablest general yet sent against the Greeks failed disastrously, to the joy of the nation. This great success was followed by others. The Acropolis of Athens capitulated to the victorious Greeks, not without the usual atrocities, and Attica, was recovered. But the mountains of Epirus were still filled with Turkish troops, who advanced to lay siege to Missolonghi, defended by a small garrison of four hundred men under Marco Bozzaris. Mavrokordatos contrived to come to his relief, and the town soon had three thousand defenders. Six times did the Turks attempt an assault under Omar Vrione; but each time they were repulsed with great slaughter, and compelled to retreat. The Turkish general lost three quarters of his army, and with difficulty escaped himself in an open boat. Altogether twelve thousand Turks perished in this disastrous siege, with the loss of their artillery.