Antigonus now safely entered the <a class="linkToPlace" target="_blank" href="/place?placename=Peloponnese&groupId=861&placeId=1552">Peloponnese</a> and took possession of the Acrocorinthus and, without wasting any time there, pushed on and reached <a class="linkToPlace" target="_blank" href="/place?placename=Argos&groupId=361&placeId=689">Argos</a>.
Having thanked the <a class="linkToPlace" target="_blank" href="/place?placename=Argives&groupId=361&placeId=688">Argives</a> and put matters in the city on a proper footing, he moved on again at once, making for Arcadia.
After having ejected the garrisons from the forts that Cleomenes had built there to command the country in the territory of Aegys and <a class="linkToPlace" target="_blank" href="/place?placename=Belbina&groupId=396&placeId=739">Belbina</a>, and handed over these forts to the Megalopolitans, he returned to Aegium where the Council of the Achaean League was in session.
He gave them an account of the measures he had taken and arranged with them for the future conduct of the war. They thereupon appointed him commander-in-chief of all the allied forces,
and after this he retired for a short time to his winter quarters near Sicyon and <a class="linkToPlace" target="_blank" href="/place?placename=Corinth&groupId=493&placeId=928">Corinth</a>. Early in spring he advanced with his army
and reached <a class="linkToPlace" target="_blank" href="/place?placename=Tegea&groupId=1011&placeId=1780">Tegea</a> in three days. Here the Achaeans joined him, and the siege of the city was opened.
The Macedonians conducted the siege energetically, especially by mining, and the Tegeans soon gave up all hope of holding out and surrendered.
Antigonus, after securing the city, continued to pursue his plan of campaign and advanced rapidly on <a class="linkToPlace" target="_blank" href="/place?placename=Laconia&groupId=662&placeId=1211">Laconia</a>.
He encountered Cleomenes posted on the frontier to defend <a class="linkToPlace" target="_blank" href="/place?placename=Laconia&groupId=662&placeId=1211">Laconia</a> and began to harass him, a few skirmishes taking place;
but on learning from his scouts that the troops from <a class="linkToPlace" target="_blank" href="/place?placename=Orchomenus&groupId=814&placeId=1470">Orchomenus</a> had left to come to the aid of Cleomenes, he at once hastily broke up his camp and hurried thither.
He surprised <a class="linkToPlace" target="_blank" href="/place?placename=Orchomenus&groupId=814&placeId=1470">Orchomenus</a>, and captured it by assault, and after this he laid siege to <a class="linkToPlace" target="_blank" href="/place?placename=Mantinea&groupId=731&placeId=1339">Mantinea</a>
which likewise the Macedonians soon frightened into submission and then he advanced on <a class="linkToPlace" target="_blank" href="/place?placename=Heraea&groupId=626&placeId=1151">Heraea</a> and <a class="linkToPlace" target="_blank" href="/place?placename=Telphusa&groupId=1013&placeId=1783">Telphusa</a>
which the inhabitants surrendered to him of their own accord. The winter was now approaching. Antigonus came to Aegium to be present at the meeting of the Achaean Synod,
and dismissing all his Macedonians to their homes for the winter, occupied himself in discussing the present situation with the Achaeans and making joint plans for the future.
Walbank Commentary