residuos duos tribunos sacramento solvit (ut desides et ignavos): decem vero milites ex his qui fugerant, exauctoratos, capitali addixit supplicio, secutus veteres leges.
Translation :
he cashiered the two surviving tribunes as inefficient and cowardly, and following the ancient laws, discharged and put to death ten of the soldiers who had fled from the field.
Edition :
Ammianus Marcellinus. With An English Translation. John C. Rolfe, Ph.D., Litt.D. Cambridge. Cambridge, Mass., Harvard University Press; London, William Heinemann, Ltd. 1935-1940.
Remark :
context: For the Persian attack, please refer to: "The Persian surena and his men kill a tribune and a few other soldiers of three Roman scouting cavalry units."