(noun) a medieval trumpet with clear shrill tones / (noun) the sound of or as if of a clarion / (adjective) brilliantly clear / (adjective) loud and clear
in essence Order Number 1 was a severe rebuke to traditional military authority – and it would remain so, as a clarion
basically letting soldiers have more of a say in their plight, which turned out to be a big sticking point in the struggle for power