world war 1 By jonnok25 Jun 1, 1914 world war 1 Jun 28, 1914 assassination of austrains crown prince and wife Jul 30, 1914 out of nowhere the war broke out between serbia and austria. Russia went against austria and germany went against russia and france. Aug 4, 1914 germany invaded belgium to attack france. that day britain and australia joined forces and decleared war on germany. Sep 25, 1914 5000 troops marched through melbourne before they embarked for war Nov 1, 1914 38 cruisers headed for the eueropean battlefront