I'm sure the RAF would give a fine account of itself in any inter-service drinking competition, but I once made the mistake of going out for a pint some time back in the 80s with a seasoned RN stoker, and to this day I question what I witnessed - his ability to consume beer was, well, not of this world. He would buy 3 pints for the 2 of us and drink the first at the bar while the next 2 were being pulled, he would then arrive at the table having drunk most of the second during the walk over. Standing my corner was almost impossible, I would say he drank somewhere between 16 and 20 pints in about an hour and a half and he didn't even seem tipsy.