If you’re not only a Gurkha, but a Gurkha who clearly has Samuel L. Jackson-style Oedipal references inscribed on your khukari, you can white-knight all you like. You can, in fact, arguably do whatever happens to suit your fancy and no one in his right mind is going to be inclined to tell you otherwise:
Bishnu Shrestha, a brave Gurkha soldier in Indian Army, defeated 40 train robbers while returning home after a voluntary retirement…. While in the train, Maurya Express from Ranchi to Gorakhpur on September 2, 2010, 35 year-old Bishnu saved a girl about to be raped by train robbers, in front of her helpless parents. After looting the train, when the robbers started stripping the 18 year old girl in front of him, he couldn’t contain his calmness. He took out his khukari and attacked the group of 40 robbers, alone. In the fight, he killed three of dacoits and injured eight others. Remaining looters ran for their lives.
The police arrested the eight injured dacoits and recovered Rs. 400,000 in cash, 40 gold necklaces, 200 cell phones, 40 laptops and other items left by the robber while fleeing the train.
I don’t think the lesson we can take away from this really has a whole lot to do with white knighting, so much as the extreme importance of never messing with a Gurkha.