Off topic

[Mobhack]

Plough on front - probably used to dig in, could be used to clear routes when deploying off-road (e.g. of fallen trees?). Same as for the S-tank, etc. Maybe its to level off a firing platform that is too bumpy.

Only one has it - so whatever use it is specialist (leads columns and clears debris?), or maybe just for trials?.

It's most probably not a recoil buffer like tube artillery rear spades - rockets dont have recoil to abate. And these things offload them to the flank anyhow.