What were the 4 weak American divisions int he battle of the bulge?

In the Battle of the Bulge, the four American divisions often considered weak were the 106th Infantry Division, the 28th Infantry Division, the 4th Infantry Division, and the 9th Armored Division. These divisions faced challenges such as lack of experience, insufficient training, and underestimation of German forces, leading to vulnerabilities in their positions. The 106th, in particular, was overwhelmed and forced to surrender large numbers of troops. Overall, these divisions struggled to hold their lines against the surprise German offensive.