The planned invasion was launched in August 1914, triggering [[World War I]]. Although the assassination of Austro-Hungarian Archduke [[Franz Ferdinand]] in Sarajevo in July created a useful pretext, this wasn't enough to prevent British involvement. The British were outraged by the invasion of neutral Belgium. They responded with a declaration of war against Germany, as well as full military support for the Belgians and French. | The planned invasion was launched in August 1914, triggering [[World War I]]. Although the assassination of Austro-Hungarian Archduke [[Franz Ferdinand]] in Sarajevo in July created a useful pretext, this wasn't enough to prevent British involvement. The British were outraged by the invasion of neutral Belgium. They responded with a declaration of war against Germany, as well as full military support for the Belgians and French. |