WW1 42nd Issue

[sailorruss]

I'm more than a little clueless when it comes to the 42nd in WW1. As a military buff (I would never say historian, as that makes me sound stuffy) I am interested as to what they were issued in the trenches. I know the traditional dress sgian dubh would be part of a dress parade and goes back a long time before the Great War.
Can anyone point me to a resource or at least mock me for not knowing?

great thread by the way. Glad it's here.