Appian of Alexandria Civil Wars 4.16.122

[122] The task of Octavius and Antony became pressing, hunger was already felt, and fear fell upon them more and more each day, ¹ for Thessaly could no longer furnish sufficient supplies, nor could they hope for anything from the sea, which was commanded by the enemy everywhere. News of their recent disaster in the Adriatic having now reached both armies, ² it caused them fresh alarm, as also did the approach of winter while they were quartered in this muddy plain. Moved by these considerations they sent a legion of troops to Achaia to collect all the food they could find and send it to them in haste. As they could not rest under so great an impending danger, and as their other artifices were of no avail, they ceased offering battle in the plain and advanced with shouts to the enemy’s fortifications, and challenged Brutus to fight, reviling and scoffing at him, intending not so much to besiege him as by a mad rush to bring him to an engagement against his will.