Terrain in this game is a HUGE pain in the ass. Movement mechanic is cumbersome and tedious. HOW can you select a destination, and just have the unit keep moving towards it until arrival, without having to give the command over and over and over and over and over every single goddamn turn for thirty turns until the unit finally arrives? This is not fun, this is WORK and FRUSTRATION and BOREDOM. WTF???

Thank you. Yeah, why build point and click waypoints into the game when you
can instead force players to have to memorize keyboard commands? Great design.

Go to Game Settings; Gameplay: and turn on Auto move.

How do you cancel the path?

You should be able to just select the unit and manually give it a new destination.