Good point about the Civil War history. Funny thing is, some of them definitely did read it. Von Schliefen once called the American Civil War, "Two armed mobs chasing each other around the country" (which always struck me as a funny visual- something out of a Rodger Rabbit venue) but didn't miss the viability of trains in moving equipment and personel around a theatre of operations. They used it very successfully 5 years later in the Franco-Prussian war in which the Prussians mobilized and attacked the French (using troops that were, in some cases, reserve formations) at the same time the French army was still mobilizing. The French were so far out of it that there were still guys wandering around the country, trying to find their units, when the war of manuver ended.
The problem with the Generals being incompetent really gets more press than it deserves. True, they sent men over the top with 60-80lbs of equipment in long lines (making perfect targets for the machine gunners) and seemed to spend less time actually on the battlefield than pushing pins in maps. But all wars, successful and unsuccessful, start with planning. The failure to adapt gets the press, the problems the Generals faced, does not.
To start, they were dealing with probably the most difficult problem in military science. How to attack a fortified postition without a flank that is held by well trained, vetran troops. Other than fighting in Cities, that is probably about as bad a problem as your going to get. Local superiority in numbers, superior training, superior morale are all musts for this situation. Also, achieveable objectives, overwhelming firepower, reserve formations in close proximity, as well as suprise. All are required. It ain't easy, no matter what anybody thinks. In truth, even thinking about how to get it done is enough to give me a headache. Glad that isn't my proffession.
Another point about WW1, it was a war where the weapons of defense had the real advantages. Negating the affect of the Machine Gun, quick firing Artillery, Barbed Wire, Entrenchments were not easily remedied. It took revolutions in how war was fought such as extending of power to make decisions down to the battalion, company and platoon level, tactical inovations (fire and manuver, ect) as well as technical innovations (the Tank, the light machine gun, sub machine gun, grenades, grenade throwing weapons, even the pump shotgun- called "a Trench Broom") to open the war up again. Definitely some generals were incompetent, some famously so. Of that there is no doubt. But plenty did learn, did try, did improvise. But they got little press. I think the British, French and Germans all lost at least 60 Generals of rank of brigadier or higher to combat during the war (in some cases as many as 70+). They had to be close enough, in most cases, to try and figure out what was going on to have that happen.
Again, not saying there weren't blockheads out there. But the legacy of WW1 is one that needs to be rethunk. History, IMHO, good history anyway, should be written after the last person involved in the event dies. Only than can the sober assessment of what actually went on begin. Up to that point, the reality still lives in the minds of those that were there.
Sorry for the length, but it's a very, very interesting and far reaching topic.