Dr. Marcus Junkelmann, Die Legionen des Augustus [The Legions of Augustus] (15th Edition), Munich 2015: "Incidentally, the interest in the reality of military struggle with its highly critical, factual implications that has awakened in recent years is not new at all. After the pioneering studies of the French officer Charles Ardant du Picq on the nature of combat (published posthumously in 1880), it was primarily German-speaking historians such as Wilhelm Rustow, Johannes Kromayer, Georg Veith and, above all, Hans Delbrück, who worked with great zeal and profound expertise have assumed tactical problems that are almost completely ignored or misunderstood by modern Anglo-Saxon research, only to their detriment" (Page 339).
