In the rules for Comrades in Combat, specifically the aid in melee, it mentions they might use their trusty entrenchment tool for a weapon to help give you the flanking bonus in melee.
Which made me curious about what the stats are for said Entrenchment Tool (especially since I know they're used by the modern military quite effectively, essentially a hand ax, and more potential trauma than the knife!), because if my comrade is using it, I probably am too!
But when I went to the weapon stats, no sign of it. Not in equipment either. Not even a mention of it in Improvised weapons.
So this might be a pretty easy fix, but it would be good to see some stats for or even just a 'counts as' line in one of the other weapons.