Eagles, Crowns and Oak Leaves is a set of free wargames rules for divisional combat in World War II. The author writes:

Both beginners and veteran players can use these rules. Play can be quick and easy or made more realistic and slower by adding advanced options.  The Combat systems reflect volume of fire into a specific area combined with the maneuvers of combat units. Procedures show that every round even hits into a target area will not cause casualties. A unit’s power level calculates its’ combat effectiveness rather than troop losses.