There is a book called Happy Odysey, autobiography or Lt General sir Adrian Carton de Wiart.
Belgian turned British officer.
fought in every war between the Boer to WW2
Got wounded time and time again, lost eye, lost hand, shot in hip, in leg in back of the head,
of WW1 he said, after the short thrill of Victory, things got a bit boring
"Quite frankly I enjoyed the war"
It's not a bad read, the man himself got into a lot of things.
Comes across as a bit of General Melchett mixed up with leftenant George in Blackadder.
I recommend the read because if gives you an insight into the mind of the upper classes back then. That man could not have lived today, not in that way.
But his read gives you an idea of how WW1 could come about and why. The mindset was for a great deal "Sport&Glory".
and in the end it also gives some idea about how WW2 was different..
https://www.amazon.com/Happy-Odyssey-Adrian-Carton-Wiart/dp/1844155390