There are three various factions readily available in the game and luckily you can change from one to another at any offered time and at no additional expense. If you choose to change factions, all the bonuses got from your previous faction will be reset and any structures that you have actually bought as an effect of those bonuses will be immediately offered. You will keep your faction's level if you choose to change back. The 3 factions readily available in the game are Money Empire, Industrial Giant and Warmonger. You can take a look at the information of bonuses used by each level with each faction in the Factions menu, however I personally advise choosing the Warmonger from start to end up, even if you're not actually thinking about PvP or battling that much. The bonuses provided by Warmonger are truly excellent and all the other factions need you to ultimately keep and assault other players up with the offensive. They do provide you particular increases to particular soldiers, while my suggested one offers you more basic bonuses.