Wasn't that when The Roman emperor , which ever one, shouted Cassuis Cassuis where are my legions? Callicasical edcachun see?
Bit of checking. It was Emporor Augustus who rent his garments and exclaimed Varus, Varus where are my legions?
Arminiius the Germanic leader led the legions into the forest and through hit and run tactics wore them down, finally defeating them in a set battle. Augustus' concern was that Varius had lost virtually all the fighting force Rome had at the time.