He achieved several successes before his U-boat was attacked and sunk by British warships .
He was the first and only commander of U-162 , which he commanded for three war patrols , becoming one of the oldest U-boat commanders of the entire war .
commander achieved several successes before commander 's U-boat was attacked and sunk by British warships .
He was the first and only commander of U-162 , which he commanded for three war patrols , becoming one of the oldest U-boat commanders of the entire war .