On August 1, 1914 Germany declared war on Russia.
On August 3, Germany declared war on France.
On August 4, England declared war on Germany.
On August 6, Austria declared war on Russia.
On August 23, Japan declared war on Germany.
On May 3, 1915, Italy declared war on Austria.
On August 28, 1916, Italy declared war on Germany.
On August 29, 1916, Romania declared war on Austria