An old Orwellian style movie that was about recovering society after a great world war. I think the main rallying cry for the heroes was "Airmen of the World Unite". They would land in recovering towns that had developing tyrants and remove the tyrants from power. I believe it was in Black and White.
The first thing I thought of was 1936's Things to Come. It's a little ponderous, but it does feature a long war and airmen who are trying to make peace prevail after the war.