Ceremony in Belgian city of Liege marks anniversary of outbreak of World War I. Germany invaded neutral Belgium on August 4 , 1914 , and Britain declared war . Over the next four years , 16 million people died in the conflict , many on Belgian battlefields . A young girl representing future remembrance then released a white balloon as a sign of peace and reconciliation before the cannon shots rang out . Hide Caption 1 of 10 Photos:Photos: The Battle for Europe
Ceremony in Belgian city of Liege marks anniversary of outbreak of World War I. Germany invaded neutral Belgium on August 4 , 1914 , and Britain declared war . Over the next four years , 16 million people died in the conflict , many on Belgian battlefields . Hide Caption 1 of 10 Photos:Photos: The Battle for Europe