The way to march? (5)
I believe the answer is:
route
This clue could be a double definition.
'the way' is the first definition.
(route is a kind of way)
'march?' is the second definition.
The definition and answer can be both to do with motion as well as being verbs in their base form.
Maybe they are linked in a way I don't understand?
'to' acts as a link.
Can you help me to learn more?
(Other definitions for route that I've seen before include "Direction of travel" , "Established line of trave" , "Course, road" , "track" , "Way of getting from A to B" .)