Plutarch. Plutarch's Lives of the Noble Grecians and Romans
Englished by Sir Thomas North. Trans. Sir Thomas North. Vol. 6 (1579; London: David Nutt, 1896) 227.

     and sent it to the citie of Thassos, fearing least his funeralsMARCUS
     within the campe should cause great disorder. Then heBRUTUS
     called his souldiers together, and did encorage them againe.
     And when he saw that they had lost all their cariage, which
     they could not brooke well: he promised everie man of them
     two thowsand Drachmas in recompence. After his souldiers
     had heard his Oration, they were al of them pretily cheered
     againe, wondering much at his great liberalitie, and waited
     upon him with great cries when he went his way, praising
     him, for that he only of the foure Chieftaines, was not
     overcome in battell. And to speake the trueth, his deedes
     shewed that he hoped not in vaine to be conqueror. For
     with fewe legions, he had slaine and driven all them away,
     that made head against him: and yet if all his people had
     fought, and that the most of them had not outgone their
     enemies to runne to spoyle their goods: surely it was like
     enough he had slaine them all, and had left never a man of
     them alive. There were slaine of Brutus side, about eightThe number
     thowsand men, counting the souldiers slaves, whom Brutus  of men slaine,
     called Brigas: and of the enemies side, as Messala wryteth,at the battel
     there were slaine as he supposeth, more then twise as many of Philippes.
     moe. Wherefore they were more discoraged then Brutus,
     untill that verie late at night, there was one of Cassius men
     called Demetrius, who went unto Antonius, and caried his
     maisters clothes, whereof he was stripped not long before,
     and his sword also. This encoraged Brutus enemies, and
     made them so brave, that the next morning betimes they
     stoode in battell ray againe before Brutus. But on Brutus
     side, both his campes stoode wavering, and that in great
     daunger. For his owne campe being full of prisoners,
     required a good garde to looke unto them: and Cassius
     campe on the other side tooke the death of their Captaine
     verie heavilie, and beside, there was some vile grudge
     betwene them that were overcomen, and those that did
     overcome. For this cause therefore Brutus did set them
     in battell ray, but yet kept him selfe from geving battell.
     Now for the slaves that were prisoners, which were a great
     number of them, and went and came to and fro amongst the
     armed men, not without suspicion: he commaunded they