what story does moche tell elie about the time when he was expelled from sighet?

Moche told Elie that they were taken into Poland by train, and then unloaded onto trucks. The trucks transported them to a forest where they were forced to dig trenches, only to be lined up and shot one at a time. The Gestapo used living infants for target practice, throwing them in the air. Moche only escaped because after being shot in the leg, he was left for dead.