If you are attacked on many towns you must guess which will be the real attack.

Now suppose that you receive 7 attacks with catapults on one town.

If you have enough defense to arrive in time, the defense will be inserted in front of all attacks.

The problem is when you don't have enough defense and the cleaning attack will broke your defense.

Many times first attack is a fake and the second is real with the biggest army and with rams.

You must send all your defense after second attack (between attack number 2 and 3).

Attention: many times the differences between 2 attacks is just one second, so you must send the defense before the second attack.