Assuming Germany won (possible) it would face US coldish-war style and strong guerilla/terrorism. So OOH it would develop Navy simialr to Soviet navy, that is offensive, designed to cut sea routes. expect SS(N), SSB(N) and strong heavy surface navy butfew carriers. Relying on land based planes. Those would also develop along soviet lines, long range bombers, point defense fighters. cosntant guerilla war would require CAS, so A-10/Su-25 like planes, cargo planes converted into gunships and strong use of vertical maneuvre + helicopter gunships.
As japanese victory is ASB expect hovercraft, magnetic propulsion and lasers by mid-1950s