DS really wants an army themed party. We are not military at all.
So, my idea revolves around an assault course in the back garden:
through a tunnel, under a tarpaulin, round some cones and shooting a Nerf gun from a hide-out to knock over some cans.
It sounds a bit lame to me, but I intend dressing the garden up in some camo stuff to at least make it look passable.
What else can I do?