We had already decided to visit the war tunnels and occupation museum (her idea not mine suprisingly enough!) and also visit the war hospital on Jersey. We’ve seen on quite a few photos of the coast on both islands that there appears to be a reasonably number of WWII pillboxes scattered along the shoreline.
Are there any other sites (specifically aviation related) I, err we can visit during our time there?

There are two aviation related memorials on Jersey, one at Noirmont point on the south coast and the other behind the Zoo in the Parish of Trinity. There are also many memorial stones scattered around the island these include one to Captain Ayton who lead the only raid to Jersey and another to the crew of an American PT boat.