@mirthadir, A Human maybe, AI noway. And i don't think human players will be very happy to see a hill city with a mix of CG3 infantry/guns. Invincible is an exaggeration on my part but it is a strong mix. But i get the idea, artillery attacks and collats the infantry, marines get 50% against guns and have 24 base against 18 for guns. Flanking cavs might work but you need a lot since the first 2 will probably lose the fight. Admittedly i'd have to test it, using guns is rather new for me. Ai can't handle them i saw but that might also have had something to do with me having more than 20 units minimum/city in 2 cities in the game i mentioned, more than 100 later .