[Xrati]

In the planet attacks what's happening is this. My game is currently set to a turn based game rather then a simultanous. You can see more of the combat results in that mode.
I attacked a Katarine homeworld with about 600 infantry. They had 450 militia defending, no troops. I had three transports full of infantry. The first one attacked losing all its troops and knocking down the defenders to about 280 militia. I landed the next transport and the defenders once again had 450 militia. The battle went the same so I landed the third transport and got the exact same result. Three battles where I knocked the defenders down to some 280 troops only to have them back at full strangth for the next transport. If you don't take them with the first transport then non of the following attempts will be any better. I should have tried ending the combat and then start the attack again to see if the results are applied after the combat is finished. Then maybe the planet would have been down on militia. I had nothing but infantry units as I didn't choose any of the troop options in the game setup.
I don't know if there's a special function for homeworlds but you need heavy troops to take planets. I currently have a game going and will be trying some different approaches. This game I took the troop options and now have Troops.