WW1 By javier brown Apr 22, 1914 Germans use poison gas German use poison gas at the second battle of Ypres Jun 28, 1914 Emperor Franz Joseph of Austria-Hungary declares war on Serbia Jun 28, 1914 Franz Ferdinand assassinated Aug 4, 1914 The Ottoman Empire signs a secret alliance with Germany Aug 4, 1914 Austria-Hungary declares war on Russia. Aug 4, 1914 Germany declares war on neutral Belgium and invades Belgium and Luxembourg Aug 30, 1914 The German army defeats Russia at the Battle of Tannenberg. Sep 10, 1914 - German invasion of France is halted at the First Battle of Marne. Nov 22, 1914 The Race to the Sea ends when the Germans withdraw at the 1st Battle of Ypres Mar 9, 2023 The United States declares neutrality in the war.
German use poison gas at the second battle of Ypres
