@Emanresu that is not true because every time you select one of your guys and leave it at the window where it has the option to attack defend magic etc all Action Time Bars stop which includes the enemies so you wouldn't be slaughtered unless your Action Time Bar is full and you don't click one of your guys.
Game is easy make two paths "Path1" "Path2" Path1 will be unblocked Path2 will be blocked, they will take Path1, sell the blocking unit on Path2 and block Path1, they will need to go back around.