There are various types of bugles with different countries often favouring one for their particular requirements. The most common type in the UK is the military type which has a compact shape, with the tubing wrapped around three times, and is pitched in Bb. French bugles are usually a bigger design with the tubing wrapped around only twice while German and Austrian variations are circular in shape, like the French Horn. Some of these have valves added to make a fully chromatic one which sounds very close to a Flugel Horn. This type of instrument is probably what the post horn solo from Mahler’s third symphony was written for.