brother, history of gurungs n magars r highly distorted. they were believed to b decendent of sum indian rajputs or rajasthani or something n hindunuised eventually by the rulers mainly jungabahadur since he was srii tiin of lamjung n surrounding areas that hav  many grg n magar popualtion as to bring them under his terms. also, i dont know how r limbus n magars related but it is historical facts that few battle between limbu n then gorkha force commanded by magars halted citing such reasons. thakuri itself r in controversy now, they claim to b distinct ethnic but sum argues that it is more a title given to rulers, ie, rana were kuwars or chettris but they r  termed as thakuris. many western principalities prior to unification were  ruled by magars who were also given thakuri title, could b one of the reason for thier facial appearance to depicit both mongolian n aryan features. there could b different explanation, too but for now thats wat i hav read n hav understood.

i am not saying only magars were gorkha soldiers in prithvi narayans era, i was just giving an example of one of their paltaan,  they had equal number n contribution including chettris n other khas tribes but our history books r so much in favour of only that high ruling class people who r over glorified n sadly which continues to happen with other historical events too. but the history from british and indian sides doesnt distort the real events n puts forward as accurate as possible and most of the service men r from rai, limbu, grg, magar, chettris tribes that brings biasness as us to b only for the service of foriegn imperials. thats wat i am trying to prove wrong by mentioning magar, grg, n kiratis paltaan in nepal army that we r equally contributing for the safeguard of our nation as well. n in times if demanded hav gone to extreme by joining armed revolution to change the political scenario of whole country along with fellow nepalese brothers.