Deutschland incident
29 May 1937, Ibiza
Deutschland badly damaged
Two Republican bombers flown by Soviet crews raided Ibiza and hit the German heavy cruiser Deutschland, anchored there on Non-Intervention patrol; they may have taken her for Canarias. Two bombs started fires that reached her secondary ammunition, killing 31 men and wounding 74. Germany and Italy walked out of the Non-Intervention Committee, and Hitler ordered a reprisal.
Read more on WikipediaSpanish Republican Air Force
No ships engaged
Kriegsmarine (Germany)
1 ship, none lost