After the Battle of Leipzig of Oct. 16-19, 1813, the Austrian Army of Field Marshal Prince Charles Philip of Schwarzenberg invaded the French Region of Alsace in January 1814 heading towards Strasbourg and the Prussian Army, under Field Marshal Gebhardt von Blucher invaded that of Lorraine in the same January 1814.
They didn't.
10 May 1940 mate.
I believe the date was April 1.
September 17, 1939
1 September 1939.
August 4, 1914
6th April 1941
204 BCE and 146 BCE.
5/28/1935
Austria sent the ultimatum to Serbia on July 23rd 1914
24th.
The date and location of the Allied invasion of mainland Europe were highly important secrets. The Nazis expected that the Allies would invade France, but they did not when and where. If they knew when and where they could have prepared for the invasion and concentrated their forces.