As nouns the difference between marshal and organiser

is that marshal is a high-ranking officer in the household of a medieval prince or lord, who was originally in charge of the cavalry and later the military forces in general while organiser is standard spelling of from=British spelling|lang=en.

As a proper noun Marshal

is {{surname|A=An|English and Scottish status|from=Middle English}} for someone who was in charge of the horses of a royal household, or an occupational surname for someone who looked after horses, or was responsible for the custody of prisoners.

As a verb marshal

is to arrange troops etc. in line for inspection or a parade.