A few time I have noticed that the corps with this order, after initial limited contact, withdraw, as indicated that it should, but continues to withdraw from the battle area, despite sending change of orders, a few time. In fact the Corps will have a Army Retreat order.
The reason I like the diversion order is because you can try out and test the oppositions line, for weaknesses, which has worked for me a few times.
But just trying to stop this continuous withdrawal thing, is a mystery to me.
Anyone