You have to do various Operations' in the sector and War with other Fronts to gain more Cash and experience (XP). Using the cash you earned, buy more Army, Air and Navy Units' which should make you more powerful and help you win more wars. You can also buy Infrastructure,Industrial or Power Unit buldings which will give you hourly income and improve your cash flow.
To succeed in the War world you can add your friends as Commanders and they will fight with you in your OPS and Wars. Once you are ready, you can fight the other War Fronts to claim their territory and win powerful inventory. Special Operations, helps you improve many aspects of your game and help you gain permanent boosts. You can use the Treasury to keep the Cash safe and earn interest. Drills' will help sharpen your skill set and gain that extra advantage over your enemies in close fights. When ever your Units are got hit/hurt, Repair Service is the place where you can revive your health in a jiffy. Drone Hits helps you to take down enemy Infantry and win big Cash.
When you are ready, join An Alliance or create your own to enter a whole new world of Alliance Wars which lets you team up with other players and engage in real time wars with rival Alliances. If your Alliance is powerful enough, you can take over States, Occupy Bases to get hourly payouts, take part in exciting Multi Alliance Total Domination wars, fight powerful Axis Alliances and SeeknDestroy other Alliances etc.
Still wants more? take part in the Tournaments, where every player and Alliance goes head-on with each other every week... the fun is just endless!