You know, you have made a very valid point.
One of the more horrific aspects of WW I was that it used 20th century technology against 19th century battle tactics, resulting in the stupendously wasteful loss of life in that war. But if the gatling gun had been invented just a little sooner, you probably would have seen similar slaughters during the US Civil War (which was fought just as incompentently, IMHO).
Another thing about the so-called "Great War" which got everyone's knickers in a twist was that instead of lop sided Imperial incursions by European nations (1890s) into technologically backwards territories of Africa (where they fought people armed with "sharpened pieces of fruit, and handfuls of grass"), now you had wholesale slaughter of the cream of White Europe. (with America joining in later). Oh, My! How distressing! War is a terrible thing when your own side suffers losses too!
The irony of WWI is that it's almost faded from popular consciousness today, with WWII starting to do the same. There are only a handful of people still living who were active participant in the first one, and the ones from the second one are thinning out pretty rapidly as well.
Shoot, I could make a case for the Vietnam war being a epoch making war. It ushered in an unsurpassed level of mistrust of the Government by the general population, we still feel the effects of it 40 years later, and we are repeating the same mistakes in the Middle East today. Maybe 1968 was the "End of Gentile Times"!
naahhhhhh......