People need to differentiate a little I believe. There is a huge difference between following a plan of action laid out by military doctrine at a given moment in time and ' cruelty' (??) labelling people as murderers (gross injustice in many cases and an absurd dumbing down of what really went on) signals a lack of understanding of how the battles panned out (especially on the Western Front). The First World was a war unlike any other, it sent men into battle against modern machine guns and quick firing artillery . These weapons were still relatively new and trench warfare on this scale had not been experienced before. On top of the fact that armies still used outdated tactics, modern weapons and all had aged leaders, the fact is that massive international pressures were heaped on the shoulders of these military leaders that NONE of us (not even the armchair generals ) can begin to fathom.
Fortunately the (although funny) absurd Blackadder type General is not a true representation of .....well pretty much any army really. This stereotyping only began to grow in the sixties fueled by now discredited books and war poetry. (it is a little known fact that poetry saw it's first spike in the early 1920's and then returned big in the 60's- (I wonder why?!!:rolleyes2

it is for this reason the newly opened IWM galleries do not heavily feature this poetry, despite what we may think it was not popular during the War as we are lead to believe)
Finally two of the biggest myths of WW1 are also gradually being thrown out with other garbage written about WW1. Firstly not all the generals were hated by the men, far from it. When General Haig died thousands of his men attended his funeral , men Haig had spent the last years of his life working hard to improve the lives of. Also the idea the men thought of themselves as cannon fodder is not only a joke but a great insult to their bravery and loyalty to their country. The acclaimed author Lyn Mcdonald told me once that all the men she interviewed over the years believed in what they were doing and even if the enthusiasm had died by 1917 they were still fighting for their mates and their 'Mob'.
Rob