 Complete the following phrase:  At the start of World War I, Albert refused to comply with Germanys request for safe passage for its troops through Belgium in order to attack France, which the Germans alleged was about to advance into Belgium en route to attacking Germany in support of Russia. In fact, the French government had told its army commander not to go into Belgium before a German invasion. The German invasion brought Britain into the war as one of the guarantors of Belgian neutrality under the Treaty of 1839. King Albert, as prescribed by the Belgian constitution, took personal command of the Belgian Army, and held the Germans off long enough for Britain and France to prepare for the 