Hiya!
This is a variation on one of our frequently asked questions, and a lot of fantastically written responses have addressed it in the past. Hopefully, some of these will point you in the right direction.
How different was manoeuvre warfare on the WW I Western Front in 1914 vs late 1918 ?
Why was World War 2 more mobile than World War 1?
If you have any specific questions, I'll happily do my best to answer them! :)