Thus , the Redoubt was a solid ' island ' with barracks , magazine , and artillery , on top .
The original form of the Drop Redoubt was a simple pentagon , formed by cutting trenches into the hillside and revetting ( facing ) them with brickwork .
The Redoubt was a solid ' island ' with barracks , magazine , and artillery , on top .
The original form of the Drop Redoubt was a simple pentagon , formed by cutting trenches into the hillside and revetting ( facing ) them with brickwork .