Age Of War
Starting from the caveman period and progressing through the ages to what looks suspiciously like a tank from Halo, Age of War is the essence of the never ending conflict. The brutality of man against man, throwing lives into the meat grinder until both sides have forgotten what they're fighting for. You start on one side while the computer holds the line on the other. Each base spits out new troops and gains more money and experience as the death toll rises. There's no tactical maneuvering here, your men simply stomp toward the enemy until they die or the person they're facing does. If they can reach the other base, they'll start hacking at that too.
First nation to destroy the other's base wins the game. You have access to a super weapon that has a cool down period before it can be used again. Nothing like a rain of flaming arrows to take the spring out of their steps.