Shaftoe sees no point in getting them all killed. So they take it a block at a time, sprinting one by one from doorway to doorway, and scouting the buildings with great care in case there are any Nips lying in wait to shoot at them from the windows. When that happens, they have to hunker down, scout the place out, count windows and doors, make guesses about the building’s floor plan, send men out to check various lines of sight. Usually, it is not really difficult to root the Nips out of these buildings, but it is time-consuming.