"From the exterior face of the wall towers must be projected, from which an approaching enemy may be annoyed by weapons, from the embrasures of those towers, right and left"

This quote by Marcus V. Pollio is referring to the importance of defensive design in war. He is suggesting that towers must be built on the outside face of a wall, which can be made use of to predict tools at a coming close to opponent. The towers need to have embrasures, which are openings in the wall surfaces of the towers, to ensure that tools can be terminated from both the right as well as left sides. This would provide the defenders an advantage in battle, as they would certainly have the ability to fire at the enemy from multiple directions. This quote highlights the relevance of protective architecture in war, and also just how it can be utilized to provide a benefit to the defenders. It additionally reveals the relevance of having embrasures in the towers, so that tools can be terminated from both sides. This quote is a reminder of the importance of protective architecture in warfare, as well as just how it can be utilized to offer an advantage to the defenders.