A glacis was created around Vienna, a broad strip without any buildings, which allowed defenders to fire freely.

He appeared hampered by an ineffective offensive line that allowed defenders to bull through before Vick got a chance to get going.

If the castle was attacked, the hoarding allowed defenders to go out beyond the keep's massive walls above the heads of the attackers.

The castle consists of two long buildings connected by a thick double wall, allowing defenders to abandon one house and continue fighting from the other.

Machicolations on the top allowed defenders to drop projectiles onto assailants.

Battlements project over the gatehouse, and would have allowed defenders to rain missiles on attackers immediately below.

Military engineers typically include firing points in these constructions, allowing defenders to deflect such an attack.

This allowed defenders to run out and set up long attacking players.

They allowed defenders to better prevent the breach of an important castle sector, and were double-layered in the largest castles.

It included further rooms for accommodation, but notably would also have allowed defenders to fire on an enemy emerging from the gatehouse.