Question
I know forces marching to the Sound of the Guns do not benefit from entrenchments. But, if the defending force is inside a structure, say a stockade, redoubt or a fort, will any additional defending forces arriving, via Marching to the Sound of the Guns, also benefit from the structure's defensive value?
In other words, will all the defender's frontage be as clear terrain and the attacker has 25% less?