Corbanile, Silea, Feligno | Vinci Rise of Nations ROL Guide

A Skirmish. Let's make example of this one and go through it just as if it was a common, story-based mission.

Use your forces to take over the city to the North as soon as possible (1). You should manage to do so before the enemy, which will greatly increase your economical potential. Expand your territory, try to snatch as much terrain as you can for yourself. The enemy will probably beat you to storming northern and southern cities (2 and 3), but he won't be guarding them too tight. Even a small set of troops can reclaim them for you. With time, try to move your main forces to the center of the map (4), where the enemy's attacks will be hardest. 

Controlling the central area of the map is your key to victory here. Defend it with all your strengths, and this way you will get the enemy's attention to a degree that he doesn't have time to expand anywhere else. When you control most of the map and the enemy's left with only one main city (5), gather your forces and go get him.

A Skirmish.

This one is based mostly on air forces, so it you've been investing tech points into them, now's the time you receive your credit. If not, it will be a bit more difficult, but certainly beatable. At the beginning, reclaim the nearby mines and conquer another city (1). The enemy will send his troops to attack you on a regular basis, so have some turrets and troops constantly guarding your base.

After a few minutes, you'll get two bonus quests: to conquer all the air bases (2) and to free the Condottieri from a prison (3). Wait until you feel your base is secure, and then strike. Among the Condottieri there is another hero who will join you, Bataglion (quite a nice fella, useful in storming cities).