Pancho Villa ordered his forces to attack a garrison loyal to Venustiano Carranza and Álvaro Obregón at Naco, Sonora, Mexico, commencing what would become a 119 day siege.
The town is on the border with Arizona.
The British took Violaines and French cavalry Fromelles . French forces recaptured Armentières.
The German Navy lost a torpedo squadron trying to lay mines at them mouth of the Thames. A German torpedo boat sank the Japanese cruiser Takachiho.
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