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The original was posted on /r/askhistorians by /u/Bandit1189 on 2023-08-17 20:58:53+00:00.

If so is there any existing recordings left of any of the calls and since its post ww1 were they used less or more when compared to field telephones. were some of the calls ex imperial era calls or did they make new calls?, Questions such as these fill my head as I had seen a video of a Red cavalier rallying fellow Reds to mount up using a bugle and so it got me curious.