A "defense road" is a road meant to improve your tactical options, and improve existing tactical bonuses such as interior lines, which let you concentrate your forces more quickly than an attacking opponent.
It is defined from a typical road, because it does not help to connect cities at all. They are great for siege weapons, allowing a move or two before shooting.
So, who uses them, and in what situations?
It is defined from a typical road, because it does not help to connect cities at all. They are great for siege weapons, allowing a move or two before shooting.
So, who uses them, and in what situations?