For many years Alfonso was the unofficial representative in Spain of the Count of Barcelona, the son and heir of King Alfonso XIII. In 1941 Alfonso was godfather for the Count of Barcelona's younger son Alfonso. In 1945, Alfonso resigned his position in the Spanish Air Force to show his support for the Lausanne Manifesto, a manifesto of the Count of Barcelona arguing for the restoration of the monarchy. This decision put an end to his military career although he continued to pilot aircraft as a civilian.