TH4 Attacking Strategies
BARCH Fill your barracks with barbarians and archers. Deploy the barbarians in front of the archers. Finding good strategies up to TH6 is hard as you do not have access to many spells or types of troops. Even army space is scarce at low town halls. This is the main reason BARCH at TH4 is very good. You can use it to get a lot of resources such as gold or elixir for upgrades. BARCH will unlock higher level town halls and even more attack strategies.
Giarch Fill your barracks with giants and archers. This is very similar to barch in the fact that you use a tank unit and archers for dps. Place giants first and then a few archers. Close to evenly divide your army to where the loot is around the base.