, I will not complicate you with the answer. There is a good Russian-language source about blitzkrieg. In chapter about Ardennes, the author criticizes the Volks-Grenadier divisions. They are weak and have 6 infantry battalions in them, instead of 9 relying infantry divisions across the state. According to the OKW calculations, the scale of the operation required 15 tank and 23 infantry divisions. The Germans gathered 30 divisions, 17 of them Folks-Grenadiers. Few tanks. The main problem, as I have already noted, was Hitler’s refusal to collect troops in Germany, refusing to hold the “Fortress Europe”.
Summary. The offensive in the Ardennes was the Wehrmacht’s last desperate attempt to defeat the Allies on the Western Front. It was conceived in the style of the classic blitzkrieg - a rapid tank attack with the environment and the destruction of large enemy forces. However, in its course even more clearly than during the operation "Luttih", the inability of the German army to the offensive was manifested. First of all, the Germans failed to gather sufficient forces. For example; The training tank division at the beginning of the offensive had only 57 tanks. The superiority of the Allies in the air forced the Germans to use bad weather, precluding the intervention of aviation, but this decision deprived air support and their own troops, which could lead to fatal consequences, as during the battles for Bastogne. The choice of the offensive area turned out to be erroneous. Yes, the Germans felt the weakness of the front of the Allies, and once again proved that tanks could pass through the Ardennes, even in winter. But “to pass” does not at all mean “to fight successfully”. Even the 2nd Panzer Division, advancing more successfully than all the others, passed no more than 10 kilometers in a day, which is not enough for a Blitzkrieg. In short, the operation “Watch Am Rein” was an attempt with unfit means, and all the successes of the Germans are explained only by the carelessness of the Americans.