I have 10000 trained human soldiers. I ally myself with the skeletons by promising the Necromancer any casualties I take, then I march with them and attack all of your troops. Against overwhelming odds and troop superiority, you take crushing defeats across the lands. I forge an empire out of your remains, and use the non-sentient skeletons for servants and laborers once I personally destroy the Necromancer.
I rule kindly and gracefully, and a long era of happiness and prosperity begins. Without war, technology advances at an unbelievable rate, and convenient space travel is developed before the earth even starts to become polluted or depleted of resources. The empire spreads throughout the stars, learning from the alien cultures it encounters, offering peace and understanding wherever it goes. By this time, I have been dead a long time, but what I created lives on, for the betterment of humanity.
That was really fun, guys! We should do it again sometime.