The color dice system and different types of dice are actually a very nice way to account for various units without having to worry about several different modifiers.
Each unit is assigned a color based on a combination of its training, weapons and experience. The result is known as the Decision Die. These are regular 6 sided dice. You can simply remember the color of a specific unit and roll any 6 siders you have. But a bit more elegant to use the corresponding color of the dice to remember which column you will look results up on. There are 5 levels running, from worst to best, Yellow, Blue, Red, White and Black. Rolling each segment will let you know what you can accomplish with your forces in the current turn.
The combat die vary from D4 up to D12. These "Fire Die" are used in combat results. There are 8 levels from Hardened as best down to Partisan as worst. As an example a unit that is classed Hardened will fire with a D12 if formed or D10 if suppressed. Partisan will use a D6 if formed and can not fire if suppressed.
Extra Crispy's link is a very good and objective look at the system overall. Would highly suggest joining the Yahoo group as the rules author is very active there and tons of information in the file system. New scenarios, for example, are posted there. After a time the older ones are taken down and collected in one of the book supplements and new scenarios added to the Yahoo group for free download.
My own personal opinion is these rules run best at smaller scales like 10/12mm, micro armor scale or ideally the 1/600th stuff from folks like Pico. Here you can put several figures on a stand and reminds you more of a unit. I have played the system and even run games with the author and find they do capture the flavor of more macro level actions.
makes corrections when some models don't turn out the way he expected!
