My Grandfather was is North Africa in WW2. He tells the story of being friendly with the Gurkha's, no issues, but one of the Sgts was a racist *** and gave them a hardtime all the time, riding them at every chance. One morning the Sgt never showed up for parade, so someone went to find him, he was still in bed with his throat cut wide open.
We would just put up with the BS, they end the BS.
People can be very patronising about them, I find it quite annoying that some Army officers treat them like kids but they usually get their own back. Never mistake their politeness for weakness, they can be very savage in their reprisals. They don't speak the same language, there's about 13 different languages so questioning them is a nightmare if they don't want to be asked about anything. Their English can be non existant too then.
Many have had hard lives back in Nepal before they joined up,it can make life seem cheap. Places are limited in the Gurkha regiments both the British and the Indian so competition is fierce. There's quite a lot of things that go on but stays in the regiment even more so that other Army regiments.