Reading a book about WWI and I can't help being astounded at the amount of deaths from a single battle on the Western Front. Literally tens of thousands of men would die in a single battle.
Being trained in contemporary warfare myself, it is hard to fathom how people, i.e. generals of the time thought that trench warfare in the manner they fought was a good idea and how they thought it might help them win - which it didn't. Sending so many people into certain death like that, crossing "no mans land" directly into enemy fire of rifles, machine guns and artillery, is complete insanity to me. From my modern perspective there were no real tactics employed in that strategy. It was a war of attrition to see which side could gain a 100 meters of ground by sending thousands of men to their deaths. How completely stupid.
Even more stupid was on the 11th of November 1918 in the morning when local commanders knew the armistice was going into effect at 11 am, that they still sent men forward in assaults to die.
I get it that it was a different time and the evolution of warfare was different than it is now and certainly with the advances in technology and tactics, but seriously, how stupid. Utterly reckless and without care or concern for humanity were many of those generals of the time.