These men [Cleon and Brasidas] had both fallen in one and the same battle before Amphipolis.
Edition :
Plutarch. Plutarch's Lives. with an English Translation by. Bernadotte Perrin. Cambridge, MA. Harvard University Press. London. William Heinemann Ltd. 1916. 3.
Remark :
thirdperson: Nicias used the results of the battle for the declaration of the "Peace of Nicias" in 421 B.C. (https://referenceworks.brillonline.com/entries/brill-s-new-pauly/peloponnesian-war-e912670?s.num=1&s.f.s2_parent=s.f.book.brill-s-new-pauly&s.q=peace+of+nicias#e912710)