Hey Mark and thanks!
Well, first of all every leader is represented by a miniature on the board and a stat army card off board.
Army commanders are Odemars German Generals that are 1/72 scale and stand out perfectly on the board among the 15mm Inf pieces. These are mounted and have a commander "number" on them.
(
http://www.plasticsoldierreview.com/Review.asp?manu=ODE&code=PF05)
Airforce commanders are simply Aircraftpieces with roundels and the Commanders "number" on them.
Naval commanders are represented by naval pieces with markings and commander "number". These ships are called flagships.
To get a leader into play you have to buy them just like any other unit.
If you look at the stat card for the 6th Army, in the unit box next to General it says L-Armor.
This tells you two things: What unit the commander represents in combat and what he costs. So if you want Paulus on the board you simply pay for a L-Armor unit and place the Paulus piece on the production chart.
All commanders are represented by different unit types, ships and planes
The maximum unit level is off course the total nr of units under a certain commanders rule. It also determines rank in cases when you attack/defend with more than one Leader. You always use the commander with highest value, and it is his traits and flaws that are used.
So when you merge two armies with two different leaders you must choose wich commander to use, this is always an interesting part of the game , should one choose the one with say 32 max units but with poor offensive traits or go with the guy who can command 20 units but has excellent offensive traits....
In the stat card in the number box you can see the maximum numbers of specific units, this is so you cant stack units that are favored by the leader. In case of Paulus his trait is that infantry def witha +1 value, and his max unit value is 24. In a perfect world he would defend Stalingrad with 24 Inf units, but as you can see he is limited to 5 Inf units.
Its all about finding a game balance.
The number in the lower right corner is the same number that is on the game pieces.
Hope this gives you an idea of how we use our leaders.
I´ll try to take some pictures of our d12 version this weekend.
Thanks for a great game!
//Spitfire