[Cameronius]

Beeg,
I made this scenario. The 3inch guns are there for historical accuracy. The fact that they will not shoot at air targets fits the historic facts quite well. These guns were sighted to hit high flying targets approaching from the sea. On May 20th the guns could not depress enough to fire on the low flying targets because of their positions on the hillside.
I think heavy calibre AA guns are explained in the Manual somewhere. I remember it's a long spiel about the dual purpose 88 and why it no longer fires at air targets.

Hope you enjoy the scenario. It will be included in the upcoming ANZAC Campaign.