How about how cars that re going to be dropped off at some sidings along the way...How would these be blocked..?? Would the first drop-off be at the end of the train or right behind the engine..?? What about an empty that would be picked up at a drop-off. Where would this one go..??
When the local was built in the yard the cars was place in town and industry order.The first car to be delivered would be in delivery order starting behind the engine then the second,third etc. However,as the local went about its business the train could be come unworkable.Most conductors would reswitch their train into workable order at a out laying yard.
Of course most crusty old line conductors would keep their train in working order.They would place the cars that required a run around move next to the caboose as well as any cars they planned to switch out on the return trip.The pickups would usually be switch into the middle of the train out of the way regardless if the car was loaded or empty.
As a old line conductor told me always keep your train workable and plan your work and work your plan never get your cabin in front of your face by not planing your moves and never move cars you don't need to.
Now cars with wooden frames such as MOW cars would need to place in front of the caboose until they was dropped off.However,if a run around move was to be made the car to be delivered at a facing point industry would be in front of the MOW car(s).The conductor would set the MOW car(s) on the passing track after the engine ran around the train.Of course some gutsy old liners would make the set out with the MOW cars in tow.Like so,Engine,caboose,MOW car(s) setout.