Why did Germany declare war on France in WWI?

Because Germany was planning to attack Russia, and they knew France would honour its alliance with Russia. Since a war on two fronts was inevitable, they decided to strike first so they would keep the initiative. read more

Because France had not declared war on Germany .Germany hoped that its DOW on Russia would result in a French DOW on Germany, as France preferred to remain neutral, Germany was forced to invent something to declare war on France . read more

Germany officially declared war on France on August 3, 1914. The conflict that originally led to Germany's Schlieffen Plan was the assassination of Archduke Ferdinand and his wife, Susan, by Serbian nationalists in the Balkans region. read more

On the afternoon of this day in 1914, two days after declaring war on Russia, Germany declares war on France, moving ahead with a long-held strategy, conceived by the former chief of staff of the German army, Alfred von Schlieffen, for a two-front war against France and Russia. read more