The decisive battle was fought on the Campus Martius, close under the walls of the city.
But Catulus conquered; and Lepidus was compelled to retreat to Etruria, while another division, under his son Scipio, threw itself into the fortress of Alba.

Thereupon the rising was substantially atan end.

Mutina surrendered to Pompeius; and Brutus was, notwithstanding the safe-conduct promised to him, subsequently put to death by order of that general.

Alba too was, after a long siege, reduced by famine, and the leader there was likewise executed.
Lepidus, pressed on two sides by Catulus and Pompeius, fought another engagement on the coast of Etruria in order merely to procure the means of retreat, and then embarked at the port of Cosa for Sardinia from which point he hoped to cut off the supplies of the capital, and to obtain communication with the Spanish insurgents.
But the governor of the island opposed to him a vigorous resistance; and he himself died, not long after his landing, of consumption (677), whereupon the war in Sardinia came to an end.

A part of his soldiers dispersed; with the flower of the insurrectionary army and with a well-filled chest the late praetor, Marcus Perpenna, proceeded to Liguria, and thence to Spain to join the Sertorians.
Pompeius Extorts the Command in Spain The oligarchy was thus victorious over Lepidus; but it found itself compelled by the dangerous turn of the Sertorian war to concessions, which violated the letter as well as the spirit of the Sullan constitution.