So much half assed knowledges, many is comparatively okay though. Here are the facts:

Prithvi Narayan shah's 4 jaat are Khas, Magar, Thakuri and Gurung (real gurung, not Manange as many said). Nepal was unified, mainly, by Khas-Magar.

British raised an army (Named Naseeree battalion) of Gurkhas comprising deserted Nepali soldiers irrespective of any caste and used against fellow Nepalese in the western frontiers. So the cry of Ranas and other Chhetris/ thakuris forcing other castes to join British army is utterly B/S.

First ever castes to get recruited in British Army were Khas-Thakuri (later 9th Gorkha) under Garhwal rifle and Magar-Gurung under Sirmoor (later 2nd Gorkha). But I don't know who spread the rumour Chhetri/Thakuri were not enlisted, this is a lie.

To you people who blame everything to Ranas, Ranas were against British recruitment (Except Bir and Chandra). Don't blame them saying they sold Janajatis, Nepalese people joined british army because of papi pet.

Pandey were khatri but Basnets can never be a Khatri, so understand Nepalese caste/ surname system first. There were few Kumai and Bahuns in Gorkhali army, as officers, Shriharsh Panta being one example, at the time of P N Shah.

Never heard of any Tandons in Nepalese history before, LOL

Kunwar came from Jumla (they were Khadka) to Kaski and moved to house of Gorkha as the doorman.

There were many notable Vassals/ officer from Magar caste, mainly from Rana, Ale, and Thapa clans. So do not belittle their blood and toils in the making of Nepal, no matter how badly caste based politics is going in Nepal now.

Remember, there were many Rais in Gorkhali army, both as soldiers and officers, during Anglo-Nepal war in the eastern frontiers. Tamangs were not allowed in the Gorkhali/ Nepali army; they were used as porters in the war campaigns though. Even many Jamindar Tharus helped providing provisions to Nepal army during Anglo-gorkha war. So, do not dismiss any Nepali's contribution.

Gambhir Singh was a Rayamajhi Chhetri from Palpa, Sobriqueted as"Bahadur" and promoted from a private in Devidutta/ First Rifle to a colonel, by J B Rana,

I am not proud of British or Indian Gorkhas but when someone talks crap I just can't stop myself and I come out of my hibernation, truth is truth.

Unity is our best identity!!