On all WW1 generals being incompetant, I think I will have to agree with Terraine:
"What a generation of naval and military leaders, no longer young, brough up in Victorian society and accustomed to a leisurely process of technical and social change, had to face was this:
the first war of aviation, with all the implications of tha;
the first real under-dea war, entirely altering the nature of nval power;
the first war of the internal combustion engine, therefore also the frist war of the mechanics, a new breed of men in uniform;
the first war of wireless telegraphy;
the first of the two great artillery wars, with all their destructive implications;
the first chemical war, using (amoung other things) poison gas and napalm (flame-throwers, petroleum-based);
the first war of modern mass production, mass logistics and mass administration (by 1916 British G.H.Q. in France was administrating a population bigger than any single unit of control in England, except Greater London);
and much else besides.
All in all, the 'custom-bound clique' had a good deal to think about; its experience was in fact unique; never before or since has so much innovation been packed into such a short space of time. The imagination of that generation (in every country) had no option but to work overtime; those who were short of imagination had to develop it rather fast. The truth is that those ruddy-cheeked, bristling-moustached, heavy-jawed, frequently inarticulate gnerals rose to challenge after challenge, absorbed weapon after weapon into their battle systems, adapted themselves to constant change with astonishing address. But no one cared to make a legend out of that."
The Smoke and the Fire, John Terraine