The "War Song for the Rhine Army" was originally titled the anthem of which country?

"La Marseillaise" was written in 1792 by Claude Joseph Rouget de Lisle in Strasbourg after the declaration of war by France against Austria, and was originally titled "War Song for the Rhine Army".The French National Convention adopted it as the Republic's anthem in 1795. The song acquired its nickname after being sung in Paris by volunteers from Marseille marching to the capital.