Original sentence: By the beginning of September, only four Panzer Regiments with Panthers were left in France, the rest having been essentially wiped out during the retreat through the Falaise Gap, with most of the armored vehicles having to be abandoned
Edited sentence: By the beginning of September, only four Panzer Regiments with Panthers were left in France, the rest having been essentially wiped out during the retreat through the Falaise Gap, with almost all of the armored vehicles having to be abandoned