In my campaign the party is going to be involved in basically a world war, so I wanted to make a pretty simple number system to determine the power of each of the armies. Here's a summary:
There are 4 things that represent the armies total power
-Numbers: The most finite of the factors. After a battle, depending on how it went, it will be reduced to reflect the number of casualties the army suffered.
-Moral: Will rise and fall depending on the armies current situation and the hope they have to their cause.
-Equipment: Represents the overall quality of the armies weapons, armor, ships, siege tools, ect. Can be increased by buying new supplies and getting them to the army.
-Skill: The armies overall skill of its soldiers in battle. Can be increased by having the army train with it's general which only requires time, through the army cannot do anything else, and the higher the armies moral, the less time it will take.
Circumstance Adjustments: These are outside factors that are affecting the army, whether it be the bonus of being in a fort, an ambush, ect, or the direct result of the actions the party has performed to influence the army. From a simple speech before the battle to improve moral to assassinating the opposing armies general before the battle.
Generals: Each army must have a general to command it and may ony have one. Each general is unique and gives the army either stat bonus or some other kind of buff.
Supplies: Just gold and food. Food is needed to support the armies. Each point of food is worth so many points of numbers in relation to feeding them. Gold, is used for basically everything.
There are not alot of rules, almost everything I can think of that isnt listed, which isnt much, pretty much falls under special Circumstance and I just decide what fits. The real problem I'm having trouble with is how the 4 stats (Numbers, Moral, Equipment, and skill) should work when the armies fight, since they dont have an overall power score. Any ideas on how they should interact? Or how to combine them into an overall score? Thanks guys.