Pukka Sahib
A first class comrade. Someone who can be thoroughly relied on.
Soldier#1: Can we trust the Sikh? I don't like the look of him.
Soldier#2: Yes we can. I served with him during the war, he's a Pukka Sahib
Soldier#2: Yes we can. I served with him during the war, he's a Pukka Sahib