This bugle call was used in the British Army to signal the moment when troops were required to turn out from their quarters. It was the not the first call of the day : the Rouse would have awakened them a quarter of an hour earlier.
If you wish to hear this call, please click here. The mp3 track is 256 Kb long and takes perhaps 45 seconds to download on a normal telephone line. The bugle call is about 52 seconds long.