John Schindler's The Fall of the Double Eagle has some information on this for the Gaillician and Serbian fronts, especially in 1914. It's scattered throughout descriptions of the campaigns, though, rather than focused on doctrine, so it may not be quite what you are looking for.
Callwell, Small Wars. Only a few years before your time window. Flying columns in chapter 11.
USMC, Infantry in Battle. Written after your time window, but a retrospective. Googling only got me a PDF with half the text, perhaps you can find it in a library. Chapter 19 or thereabouts.
The Middle Ages lasted for about a thousand years in most parts of Europe, from about AD 500 to about AD 1500, depending on the particular definition of the Middle Ages.
And Europe is a very big place, about as large as the United states of America, and so at the beginning of the Middle Ages it had a very diverse set of cultures outside of the former and ...
No. You capture them alive for ransom.
Battles like Crecy are atypical. When you neck that fallen lord you’re losing your handful of silver of the share of your lords ransom of the toff.
Dismounting the Toff yes.
Threatening to kill the Toff yes.
Pissing months of trying to drink yourself to death down the drain with a short knife draw? no.
Yes and no. Uniforms and rank insignia as we understand them didn't exist back then. It was very easy to see who was high(er) in rank, though. Members of the knightly class wore their coat of arms on their shield, clothing, barding and sometimes on top of their helmets.
It was very easy to see important nobles. The problem was what to do with them. The ...
The horse always the horse. The reason Calvary decimated infantry and especially archers was a war horse could weigh 1,200 and 1,400 pounds and can run at speeds up to 55 miles an hour. A rider on such an animal could ride right over massed foot soldiers killing or incapacitating many men, not by act of the rider but just the impact of the horse. You ...