Anything that involved Pommy Generals and tactics was bound to turn to crap.
Biggest problem I believe, especially during WW I, was the English Corp of Officers was full of members who either inherited their rank, were commissioned on the strength of Daddy's position in the aristocracy or they "bought" their rank for a status symbol.
Unfortunately it was no better in Australia's early days, but it was soon corrected here...it took a fair bit of WW II before the problem disappeared in Pomgolia.
There are stories of English Senior Officers sitting on a platform, back out of range, directing the battle whilst taking "elevenses" in a comfy chair and being served by servants or a Batman.
All Commonwealth countries paid a massive price for being "driven" by these morons during WW I...but none more so than the English soldiers themselves.
General Haig, when questioned, declared that all men accused of cowardice and desertion were examined by a Medical Officer (MO) and that no soldier was sentenced to death if there was any suspicion of him suffering shell shock. The Under-Secretary of State for War also and repeatedly misled the House of Commons on this matter. In fact, most soldiers accused of cowardice and desertion were not examined by an MO, and in the few cases where a medical diagnosis of shell shock had been made, the medical evidence was rubbished or ignored and the man was convicted and shot anyway. General Haig not only signed all the death warrants but when questioned later on this issue lied repeatedly. General Haig's behaviour in choosing to murder his own men places him in the category of war criminal.
Stress Injury to Health Trauma PTSD
I believe Gen Haig (Butcher Haig) should have been charged with war crimes for his campaign of executions of Commonwealth soldiers in the name of cowardice, then stripped of his title and all awards. There is no reason why this could not still happen, and history changed to reflect this decision.