From Settings.txt:
Defending Units Per Population := 20
This means you get 1 militia for every 20M population. Since defending ground troops are considered as planet cargo, they get destroyed in planet attacks before you land troops. Thus there is rarely a troops vs. troops ground combat. It is usually your attacking troops vs. defending militia. Settings.txt also gives attack/defense stats for a militia unit.
P.S. read this, it answers most of your questions:
http://www.shrapnelgames.com/cgi-bin...;f=23;t=005518
Slick.
[ January 07, 2003, 15:18: Message edited by: Slick ]