Austria-Hungary
Austria-Hungary in the First World War →Tag
(356)1917
January
March
April
May
June
July
- 22
- Battle of Mărăști beginsOn 22 July 1917 Averescu's Romanian Second Army opened fire on German positions in Vrancea. It was Romania's first offensive in six months.
- Key eventSiam declares war on Germany and Austria-HungaryOn 22 July 1917 King Vajiravudh declared war on Germany and Austria-Hungary. At dawn the Siamese interned the Germans and seized nine German ships.
August
September
- 12
- End of the Eleventh Battle of the IsonzoOn 12 September 1917 the last great Italian assault on Monte San Gabriele failed. That day the Austrians got orders for a joint offensive with the Germans.
- Key eventPatent on the Regency CouncilOn 12 September 1917 Germany and Austria-Hungary issued a patent giving power in the Kingdom of Poland to a three-man Regency Council, under occupiers' control.