Leonnatus had now no choice left. It was in Macedonia alone that he could hope to establish himself. But it seems that he thought it necessary for his own sake, first to quell the insurrection of the Greeks, and then to rid himself of Antipater. He therefore crossed over to Europe, and marched towards the theatre of war. In Macedonia, he added a large body of troops to his army, which then numbered no less than twenty thousand foot and twenty-five hundred horse. When Antiphilus heard of the approach of this formidable force, he immediately perceived that the siege must be raised; and he seems to have taken his measures with great judgment and energy. He fired his camp, sent the baggage and all his useless people to Melitæa, a town on the Enipeus, which lay near his road, and himself, crossing the chain of Othrys, advanced with his unencumbered troops to meet Leonnatus, before he could be joined by Antipater.
DEATH OF LEONNATUS; NAVAL WAR; WAR IN THESSALY
Leonnatus charged with his wonted valour; but after a sharp combat, his troops were broken, and put to flight, and driven into the marsh, where he himself fell, pierced with many wounds. The Greeks remained masters of the field, and erected their trophy, the third which they had won since the beginning of the war.
To Antipater however the loss which he suffered through the defeat of Leonnatus was more than compensated by the advantage he gained from the death of a formidable rival; though he may not have known the whole extent of his danger. He had followed the march of the Greeks, and it seems was at no great distance when the battle took place; for the next day he effected a junction with the army of Leonnatus, which immediately acknowledged him as its chief. He now saw himself at the head of a force, before which the allies, but for the superiority of their cavalry, would not have been able to stand. Still, such was the terror inspired by the Thessalian horse, that he did not venture to descend into the plain; and he had probably already received intelligence of the approach of Craterus. He therefore advanced along the higher ground on the skirts of the plain towards the borders of Macedonia. Antiphilus and Menon could only watch his movements, and made no attempt to obstruct them; but remained in the central vale of Thessaly.
In the meanwhile the Athenians, who had undertaken the whole burden of the war on the sea, had been defeated on what they were used to consider as their own element. The Macedonian admiral Clitus, with his 240 sail, gained two victories over the Athenians, who were commanded by Eetion, and destroyed a great number of their ships. Soon after, when the Macedonians had become masters of the sea, a squadron was sent, with a strong body of troops, Macedonians as well as mercenaries, under the command of Micion, to invade Attica. Phocion led as strong a force as could be mustered to meet the enemy, who had landed on the eastern coast, not far from Marathon, and was overrunning the country. But the enemy was defeated, and driven back to his ships with great loss, and Micion was left among the slain. So that even this naval war, though it probably inflicted a severe injury on the Athenians, terminated in a manner which reminded them of better days.