Jordi Riddle - the second edition

Jordi - The King of Historypuzzles did it again -
this time he wants to know the name for the ongoing when Austria belonged to Germany. 
His pronunciation was: "Ehnjus".
That is all I can give away...

Again the right answer will obtain a prize. The people who listened to the remedy during his wise words and the prior winner Jonathan are, I'am sorry, excluded. Muito feliz!

(This foto is taken at our university café outside - We all love this place)