Note 081
From Chapter 46 of the Decline & Fall

Foggini (Annotat. p. 31) suspects that the Persians were deceived by the Ancient Greekof Aelian, (Tactic. c. 48,) an intricate spiral motion of the army. He observes (p. 28)that the military descriptions of George of Pisidia are transcribed in the Tactics of the emperor Leo.