The most particular artwork preserved at the Museo Storico dei Granatieri is a bust made of bronze representing King Umberto I defaced by two gunshots. The bullets were shot by the German army during the last conflicts of the Second World War when, after the armistice signed on September, 8th 1943 the soldiers entered the palace to arrest Vittorio Emanuele II without knowing that he managed to leave during the night. Disappointed by the unsuccessful attempt, the soldiers shot some bullets towards the bust of the King's father, at that time located in the courtyard.