Bridgehead (noun)

1. A strongpoint or stronghold established on the far side of a bridge, used to secure and defend a bridgehead.
2. The position or area on the far side of a bridge, often the starting point for an advancing army.

Origin:

From the old english brycg + heafod, meaning the head or starting point of a bridge.

Examples:

1. The bridgehead was crucial for the army's ability to advance further into enemy territory.
2. The bridgehead was heavily fortified to prevent enemy attacks from crossing the bridge.
3. The bridgehead allowed the army to establish a secure foothold on the other side of the river.
4. The bridgehead was used as a staging area for the next phase of the military operation.
5. The bridgehead was the first step in securing the region for the invading army.