I like to get double duty out of some of my collection, so my US Army WWI soldiers get to take part in inter-war combat as well. The shrike was a dive bomber used by the US Army between the wars. This is a limited edition kit that was difficult to put together, but I only wanted two, since the Army Air Corps was pretty limited in the 1930's.
A small Pitcarn gyrocoptor. The gyrocoptor was all the rage in the 1030's, too bad they never really caught on. The US Army did operate them a few times in the interwar years.
This is a Matchbox Supermarine Stranraer model airplane that my friend Col Jim built. While building it suffered and industrial accident and the kit was ruined. So he gave it to me. I converted it to a notional mono wing sea plane in American service.