The U-9 sank three British armored cruisers in the North Sea. The SMS Emden bombarded Madras, India. The SMS Scharnhorst and Gneisenau entered the port of Papeete, Tahiti, and sank the French gunboat Zélée and freighter Walkure.
Royal Naval Air Service No. 3 Squadron based at Antwerp, Belgium, attacked German airship hangars at Cologne and Düsseldorf, Germany. No serious damages was inflicted. It was the first British air raid on Germany.
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