If you order a unit to move to a far away tile and you want to check where it is moving a few turns later, then you have no way of doing so. They just won't tell you where they are going.
An arrow likes this with the number of turns really needs to be there:
(1)--------(2)--------(3)------->
An arrow likes this with the number of turns really needs to be there:
(1)--------(2)--------(3)------->