It is known that in the Jinshin War, which happened around that time, Emperor Tenmu closed Fuwanomichi (an important gateway to Togoku, present Sekigahara of Gifu Prefecture) at the initial stage and got an advantage.
その前後の壬申の乱では、天武天皇が初動で不破道を塞ぎ、優位に立ったことが知られている。