Here are the effective types of attacks.
Rainbow ~ A rain bow is a attack consisting of great amounts of
archers and one of warriors, cavalry, cataphract, scouts, swordsmen and
pikemen. By sending these extra troops you are given extra rounds for your
archers to attack.
Layered Attacks ~ Layered Attacks is a attack consisting of three
different attacks that are at most 30 seconds apart. The first attack
consists of mainly warriors. These warriors will die, but they clear out
traps, and other wall defenses for the second attack. The second attack
consists of archers and sometimes I will throw in some cavalry and
cataphracts. This attack will take losses depending on the amount you send.
The third attack is basically everything else. This attack finishes up the job
and also is for plundering if you want to.
Scout Raids ~ Better Know as scout spamming/ scout bombs, this attack consists
of sending 150k plus scouts at a city and yes the scouts will die, but they
are cheap to make. Because they are cheap and fast to make, they can
be made in large numbers real quick, making them perfect for the job.
These troops are fast and while in battle can reach archers killing a good
30k - 40k if you have 100k - 150k (depending on your heroes attack level).
Warrior Raids ~ This is basically the same as a scout spam, but they
are stronger and can make a bigger impact. They will take loses, but
there is a greater chance of survivors with this strategy. This attack
usually consists of 70k plus warriors. Not very commonly used for the
heavy loses factor.
Pony Raids ~ This is very simple. All you do is send 5k ponies after all the enemies
troops are gone to drop the loyalty.