Has anyone played Rule the Waves? It's a naval game set in the dreadnought era where you manage your nation's fleet. It has a ship designer, so you can design your own ships (and watch the technology rapidly advance) and engage in a naval arms race with the other powers. When war breaks out, there's a tactical battle generator that you use your fleet to fight it out- anything from fleet battles to single ship duels and cruiser actions, etc. Don't get it for the graphics, though. Very basic interface and graphics, but there's a surprisingly deep combat model behind it, as well as the ship designer and technology. There's videos up on YouTube.
It is actually something akin to what I'd like to see the Ultimate General series develop into. Say instead of just the ACW, you were 'chief of the army' for one of a variety of nations. Your "Camp" turns would involve building, equipping, and deploying your forces to guard your nation's territory and/or interests. Every once in a while, a war would break out, and you'd have to fight some battles produced by a battle generator using the forces you've developed. You could research technology and purchase new equipment, and make decisions about whether to have a large conscript standing army, or a smaller professional force, militias, etc.