When Defending yours or an alliance friend base or even a resource mine, all lost troops will be rescued and converted as wounded. All wounded are moved automatically and instantly at the end battle to the Civil Center awaiting to be recovered. Recovering troops is much quicker and more efficient than actually retraining them from scratch. The Recovery process requires a free Recovery Queue as well as time and resources.
To begin a recovery:
- Tap on your Civil Center or Recovery Depot and select the Recover option.
- Expand the Recovery Queues on your Action Bar and tap on one if its free
You recovery is not unlimited however. There is a capacity which is improved from the Civil Center and the Recovery Depot. If the lost troops exceed the recovery capacity, wounded will be filled up to cap and the rest will be still considered lost.
Don't forget when Attacking other Bases or Resource Mines, all troops are lost. Your recovery crews can't get on these battlefields yet, but don't worry this will change with time.