1. Use the "Peace Shield" item to protect your city from being attacked for a period of time (does not protect troops outside of the city). 2. You can withdraw troops that are collecting resources if they're attacked. 3. You can send out troops to avoid one attack if your city is under attack. 4. Use "Advanced Teleport" items to flee from the chaos and your enemy won't know about your new location for a while. 5. Build enough hospitals so that your troops will be wounded instead of being killed in battle. In this way, you can send wounded troops back to battlefield while expending the shortest time and fewest resources possible. 6. An alliance is always a powerful form of insurance. Allies can send reinforcement to garrison in your city. Your allies can support you more easily when you are located nearby. 7. After you build the "Hall of War", you can send a "ghost rally" to protect your troops. The troops you put in rally preparation will not join any battle. You can cancel the rally before they start to march.