Barch is a combination of barbarians and archers. It is used primarily to save resources (especially dark elixir). You should end the battle once you have gotten enough resources and have gotten one star.
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Minimum Troop Housing Space Required: 135 Minimum Spell Housing Space Required: (not specified)
Before starting the battle, check where the resource you are looking for is completely or partially unprotected by spash damage defenses.
Check for clan troops. Use poison spell if you have to take out clan troops, or lure them out to the edge of the map and take them out with archers and barbs.
Use lightning spell(s) on splash damage defenses in eange of resources.
Be wary of any splash damage defenses during the battle.
Deploy barbs and archers in a small area to overwhelm the single target defenses and get closer to the resources.
When resource building is in a clear path, spam in both barbs and archers to collect the resources needed.
Now is the time to deploy heroes if you have, deploy them in the same place as the barbs and archers.
Wait as the battle most likely will yield you one star.
As soon as you get one star end the battle. If you did not deploy your full army that is an extra bonus.
Do this over and over again and you will have lots of resouces in no time!
(No execution notes)
This is a hit and run raid strategy. Once you have gotten one star ned the match, saving any troops is good becuase you don't have to retrain them. This strategy is the most commonly used for bases that need loot.