 Complete the following phrase:  The 1st Infantry Regiment 1er Régiment dInfanterie, abbreviated 1er RI is an infantry regiment of the French Army, founded in 1479 as one of the oldest regiments in active service in the world. It is an offspring of the bande de Picardie under the Ancien regime, and one of the five oldest regiments in France. It particularly distinguished itself, as the 1ère Demi-Brigade dInfanterie de Ligne, during the French Revolutionary Wars at the Battle of Fleurus 1794, the 