He became a pilot in 1931 and an observer in 1934 and began working in training schools .
Harlinghausen joined the Reichsmarine ( German Navy ) on 1 April 1923 .
Harlinghausen became a pilot in 1931 and an observer in 1934 and began working in training schools .
Harlinghausen joined the Reichsmarine ( German Navy ) on 1 April 1923 .