The USA continued to work on air-launching ( literal ) copies of the V-1, built by Willys as the JB-2 Loon and dropped from B-17s in tests. Tens of thousands were planned for the invasion of Japan, to be air-launched and also rocket-launched from decks of submarines.
Of course orders were slashed after VJ-Day but those that were built continued as testbeds until the 1950s.