Any Units you send to a Hamlet will be returned to your Catacombs if any of the following situations occur while they are on their way:
- The Hamlet disappears from the Map. This occurs if no one сaptures or attacks it for more than 24 hours
- The Hamlet runs out of Resources, and therefore disappears from the Map
- The Hamlet is captured by a member of your League
- The Hamlet you were trying to attack or spy on becomes vacant.
In each of the above cases, your Units will not be stationed in your Castle when they return, as they are sent immediately to your Catacombs.