function of the differents ground units

[SilverWolf54 (OP)]

hi im new to the game, still try to understand the game (going throught my 10 practice game )

so im was working in building my army and im was wondering what are the function or posible uses of the differents ground units?

im know the Construction Brigades are used for construction of facilities and for recovery of alien ruins. 

combat engineer and marines are best use for attacking/defending and boarding PDC (only for engineer) and ships. 

Replacement Battalions are use as reinforcement or to recover ground units on planets

a garrisons are used for conquered planets ( dealing with unrest)

but im still dont know what function or uses could have Asault, Heavy, or Mobile infantry batallion could have or which is better?


also does the NPR or the spoiler do planetary invasions ?

[MarcAFK]

The wiki lists the stats if all ground units http://aurorawiki.pentarch.org/index.php?title=Ground_units scroll down to where it says ground units 6.20
Basically mobile infantry has moderate attack, high defence, assault infantry has high attack moderate defence, heavy assault has very high attack and defence.

[joeclark77]

You need attack points to conquer an enemy, but you need defense points to hold them and suppress rebellion. For my part I build garrison battalions for every colony to keep the peasants from revolting, and when I'm conquering an NPR i'll drop a division of assault and a division of mobile infantry. So far that's worked. Can't say yet if there isn't a better way.