When the Athenians learned that the Lacedaemonians had concluded the war
against the Phocians and were about to make their return home, they decided to attack the
Lacedaemonians while on the march. Accordingly they dispatched an army against them, including
in it Argives and Thessalians; and with the intention of falling upon them with fifty ships and
fourteen thousand men, they occupied the passes about Mt. Geraneia.
But the Lacedaemonians, having information of the plans of the Athenians, took the
route to Tanagra
. The Athenians advanced into Boeotia
and formed in line of battle, and a fierce struggle took place; and
although in the fighting the Thessalians deserted to the Lacedaemonians, nonetheless the
Athenians and the Argives fought the battle through and not a few fell in both armies before
night put an end to the struggle.
After this, when a large
supply-train was on its way from Attica
Athenians, the Thessalians decided to attack it, and taking their evening meal at once, they
intercepted by night the supply-train.
The Athenians who were
guarding the train were unaware that the Thessalians had changed sides and received them as
friends, so that many conflicts of various kinds broke out around the convoy. For at first the
Thessalians, who had been welcomed by the enemy in their ignorance, kept cutting down all whom
they met, and being an organized band engaging with men who had fallen into confusion they slew
many of the guards.
But the Athenians in the camp, when they
learned of the attack of the Thessalians, came up with all speed, and routing the Thessalians
at the first charge, they were making a great slaughter of them.
The Lacedaemonians, however, now came to the rescue of the Thessalians with their army
in battle order, and a pitched battle between the two armies ensued, and such was their rivalry
that many were slain on both sides. And finally, since the battle ended in a tie, both the
Lacedaemonians and the Athenians laid claim to the victory. However, since night intervened and
the victory was still a matter of dispute, each sent envoys to the other and they concluded a
truce of four months.1