Proconsulate of Macedonia

Archelaus must either retreat to Athens or fight Mugillanus in the mountains of Attica to preserve his hold over the region. The romans are marching down towards the city imminently.

Mugillanus take up camp outside the walls of Athens, demanding once again that the city surrenders. Using whatever resources they find, the Romans begin construction of a temporary fort while keeping lookout for the rebel Greeks, while cavalry scouts the local region for enemy troop movements.

Once the Roman fort has been raised, Mugillanus ponders his next move. The Long Walls protects the connection between Athens and the port of Piraeus, but to take those would mean to spread out his troops and risk an attack from the rear. The only way forward is to defeat Archelaus once and for all.

The Roman army marches out to find and defeat the remnants of the Greek army. The allied cavalry of around 900 left take the vanguard, spread out to find the enemy.

(Will need orders from both sides, if there is to be a battle)

The Greeks began the battle in a good position, occupying two large hills in the highlands of Attica, within the shadow of the nearby mountain ranges.
The Hoplites form the main part of their battle line, which is interrupted by the dip between both hills. At the vanguard wait the light peltasts and skirmishers, while in the third line wait the Galatians to shore up the flanks.
Behind the hills, hidden from the Romans, is a substantial force of Thessalian cavalry.

The Romans form up traditionally, albeit with cohorts on each wing to try and surround the Greek position. Mugillanus' cavalry was on the left, commanded by the Pro-Consul himself.

The Romans slowly advanced, the blowing of horns signifying a general advance. Attacking uphill was against conventional wisdom, but the commander had faith in the steel of his infantry. 

They did not disappoint. Up the hill on the Greek right, the Romans made good ground. Forming a wedge, the legion pierced a few ranks deep into the enemy lines, before the battle on that side descended into a general melee.
On the left, it was more hard fought. The Greeks held firm, even as the Romans massed right before them. The battle seemed to hang in the balance.

Archelaus played his card. The Thessalians came storming around the Greek right, crashing into Mugillanus' cavalry detachment and the flanking cohort. Perhaps not expecting any infantry resistance, the Thessalians quickly found themselves outmatched and were forced to fall back and regroup.

Mugillanus had a card of his own. Though he sustained a minor wound to his thigh, the Roman general led a flanking charge into the Greek right that was aimed right at Archelaus himself. Fortuna favours the brave. A stray Roman lance from a young officer caught the general in the throat as he scrambled to hold his position. 

The battle swung the Romans way after that, though the Greeks to their credit held firm even as their commander died. Electing a new commander from amongst themselves, the Greeks beat an organised retreat south-west, towards the Isthmus of Corinth, over which they would cross into Achaea. They trusted the walls of Athens to hold firm for the time being, and that the still relatively new Roman colony of Corinth would offer little resistance.

Minor Roman victory. -1 to Mugillanus resistance for 2 days. Archelaus KIA.

Roman losses:
585 Legionaries
115 Cavalry

Greek losses:
300 Light Infantry
280 Hoplites
132 Galatians
600 Cavalry

Built atop the ruins of the old Greek city state, Corinth would offer stubborn resistance, but little else. They did not have the size or manpower to block the Isthmus, and so thus far they had been ignored by the Greeks. They sent word to Pro-Consul Mugillanus that the Greek army intends to wipe them out, as had been done to the Latins in Asia. For now, the relatively stout wooden walls would keep them secure.

Mugillanus wasted no time, even though his leg needed to tended before he could continue. The Roman army marched in pursuit of the remnants of the Greek army, determined to wipe them out once and for all.