A dose of humour before the serious work begins.
Jimmy Russell does his rendition of 'Mammy' which wasn't bad, before the 'fighter patrol'
leaves to do its work. Basically that was to patrol a given sector and
keep it free of Chinese troops overnight, thus prevent any secret buildup
from which to launch an attack in strength on our forward positions.
units failed to do this, and as a result paid a heavy price by losing,
then having to recapture their own positions. IE. Hill 355 twice. (An American Army veteran wrote a whole book about just one attempt his unit made to recover part of 355 after one of those losses.)
IWM photo MH31929