Note 086 For the Roman trumpet, and its various notes, consult Lipsius de Militia Romana, (Opp. tom. iii. l. iv. Dialog. x. p. 125-129.) A mode of distinguishing the charge by the horse-trumpet of solid brass, and the retreat by the foot-trumpet of leather and light wood, was recommended by Procopius, and adopted by Belisarius.

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The History Of The Decline And Fall Of The Roman Empire —Fall In The East —Chapter 41