The reason that Black Adder was more than just another TV comedy was that it captured the black humor that was likely to have been the standard response to life in the trenches and the views was of those fighting under such appalling conditions.
It would have been very hard to maintain a wide historically and politically accurate view from a trench in Flanders.
Mr Grove is looking at the wider picture, Baldrick is firmly stuckin the trench ( as was my Grandad )