Troops are used against either the goblins on the campaign map or other players in order to win Trophies and loot gold and elixir - This is called raiding. Troops are created in the Barracks and will be stored in an Army Camp. Currently there are 13 Different types of troops.

Players should note that troops can be upgraded in the Laboratory. Tier 1 and Tier 2 troops receive a major graphic change at Level 3, and receive another change at Level 5 and 6. Tier 3 troops receive graphic changes with all upgrades. As troops are upgraded they become more powerful, but also cost more elixir.

Tier 1 troops are very powerful when swarming in mobs. However, this makes them very vulnerable to Wizard Towers and Mortars. They are Barbarians, Archers, and Goblins Tier 2 troops are more powerful than a Tier 1 but not as powerful as a Tier 3. Many of them target certain things. they are Giants, Wall Breakers, Balloons, and Wizards. Tier 3 troops are extremely powerful and are a good part of a very powerful army, being able to to overwhelm defences easily. They are Healers, Dragons, and P.E.K.K.As.

You can calculate the required cost of an army using this calculator.