airborne_artist
Lantern Swinger

In the Telegraph here
"Commander Alec Dennis, who has died aged 91, captured the first documents and code books for a German Enigma machine when a lookout on the destroyer Griffin off Norway in April 1940 spotted a trawler with a large painted Dutch flag. .......With the documents recovered from the sea and another found in Polares giving the procedure for setting the scrambler of an Enigma machine, Alan Turing was eventually able to read Enigma at Bletchley Park." [which had not been done before]
In other words, a very important capture.
Later in the war he commanded the destroyer HMS Valorous, aged 26.
"Commander Alec Dennis, who has died aged 91, captured the first documents and code books for a German Enigma machine when a lookout on the destroyer Griffin off Norway in April 1940 spotted a trawler with a large painted Dutch flag. .......With the documents recovered from the sea and another found in Polares giving the procedure for setting the scrambler of an Enigma machine, Alan Turing was eventually able to read Enigma at Bletchley Park." [which had not been done before]
In other words, a very important capture.
Later in the war he commanded the destroyer HMS Valorous, aged 26.