OK, I see...
As a rule of thumb, it goes by the speed of the unit, but there are exceptions (rogues, paratroopers, strike teams, et al), so it won't always apply.
[Feedback] - Oceanic Future Part 6but units do not have "speed"
I am sure you will not believe me cause I lie and do not play the game but units do not have "speed". They have "movement".
As a rule of thumb, units that have rapid deployment move first, after that it is the fast unit. The era the unit is from also is a factor.
If you can't make the correlation between the two, I'm guessing you couldn't make it past grade 6, Jethro.
Fast unit generally moves next because it is faster than others, thus the name. It's not that it's fast unit, it's the speed of it, Jethro. But, as you may have guessed, fast units tend to be fast. Did you know that?
Jethro
Nought nought, nought nought nought, nought nought.