{ Vegec. de re militari, lib. 2. cap. 5. Curtius lib. 7. Brisson. desorm. pagin. 380. Demster. ad Rosin. lib. 10. c. 3. Ayala de iure belli, lib. 3. c. 5. Lipsius de milit. Rom. lib. 1. c. 6 Filesacus 2. select. tract. 2. c. 3. pag. 94. & sequent. }