German submarine UC 20 bombarded Homs according to the Kriegsnachrichten of the Chef des Admiralstabes der Marine dated Berlin 4 August 1917

An item reported that the German submarine UC 20 commanded by overleutnant von der Lühe fired 44 shots at barracks and military objects ar Homs [Syria?] sighting one flawless hit.

Source

Bundesarchiv RM-40-622