The German army would first cross Belgium and defeat France, which would allow Germany to move to the Eastern Front and defeat Russia. Germany invaded Belgium on August 4, which provided Britain with an ideal reason to break its policy of splendid isolation to engage in European affairs (Pembahistoryclub.blogspot.co.uk, 2015) by declaring war on Germany. Britain claimed to honor the Treaty of London (Firstworldwar.com, 2009), however it may have been an excuse to get involved before Germany had easy access to Britain through the