I would go with Vosper's view.
Strategy being things with long term effects on the war.
The 8ths targets being factories, refineries, etc. Germanys way of making war over all.
Tactical being do deal with things that directly effect the battle(s) at hand.
If you looked you may find the 9ths targets being closer at hand like the airfields near a battle area, tank staging areas, or troop staging areas or even local HQ areas.
S!
Rocket