Pretext

Thomas Wilfred, a new American ace in the Pacific War against the Imperial Japanese Empire, was blown away into a storm. When things had settled, he found himself flying over unrecognizable land. The sea was clearer than the ocean on Earth. When he lands, he is met face to face with humans, but something was clearly off. The United States and its allies had lost WW2. Will Thomas be able to return to the dimension where the United States had won, or is he stuck in the world under joint German and Japanese rule?