Bobgate I very rarely use units for happiness, (only in core wonder cities that need the extra). I prefer to use luxeries for happiness. I find if you have luxeries at 40-50% in republic, you don't really have to worry about happiness or CF. I have done tests myself, when a town flipped reloaded to save previous turn (I save at end of all turns) and raise luxeries to see how it affects the flip. I find between 40-50% luxeries usually prevents flipping. So I keep them at this level during war. And I never even worry about science. In this months GOTM9 I conquered the world before I ever even learned scientific method. And I don't just have my MW roaming around I have scouts scouting, and my MW usually just go city to city, rest one turn in town to quell resistance leave on behind for defence and move on. I know that against the AI you don't even have to have a defense in most your cities. I haven't been able to figure out the method myself, but I have downloaded and studied Aeson's HOF diety game, and noticed one odd thing. In almost all his cities there was no units at all! All his units were out at war taking over other civs. In the end of my GOM9 I did the same, just simply disbanded all defense, except around main battle front, and the AI never came to my undefended cities. However there is one point I can give to the Impis against my MW; there the only defensive unit of there era that the MW can't retreat from battle from. So it's kill or be killed. That is great plus for them, but they still die eventually. My current attempt at an HOF I am using MW offensive, 130AD and I have already produced 112 MW. The AI has not yet learned about pikeman, so all civs in my way are doomed. I mean really what can you do about 3 30+ stacks of MW in the anciant era? DIE