Note 26 — Chapter I

De Re Militari, iii, 5: "Muta signa sunt aquilae, dracones, vexilla, flammulae, tufae, pinnae. Quocunque enim haec ferri iusserit ductor, eo necesse est signum suum comitantes milites pergant." He is here using the word signum in the sense of signal, and divides these signals into vocalia or orders given by word of mouth, semi-vocalia or those given by trumpet, and muta or those denoted by the movement of the standards.