British bombers attacked the German cities/harbors Wilhelmshaven, Cuxhaven and Brunsbuttelkoog according to a report of the American Naval Attaché at Berlin, Germany Nr. R562 dated 15 September 1939

Admiral Graf Spee. ©Warshipsresearch.blogspot.com

Diary note dated Monday 4 September 1939. An item reported that around British bombers attacked around 18.00 the German cities/harbors Wilhelmshvaen, Cuxhaven and Brunsbuttelkoog claiming to have damaged two warships. Reports dealing with the numbers and losses of the aircraft varies. German officials first claimed that the German pocket battleship Graf Spee fended off. Later was her name scrapped. First was every damaged denied, later was admitted that wreckage of a shot British plane fell on the forecastle of the German light cruiser Emden although with minor damage.

Source

National Archives. FDR Presidential Library&Museum Roosevelt PSFC000175. War diary Naval Attaché Berlin, volume 1 (1 September 1939-26 May 1940)