 Complete the following phrase:  On 14 September, the regiment entered Germany, at or near, Roetgen; it was the first German city to fall to the Allies. The regiment penetrated the Siegfried Line near Schevenhütte on 16 September. This was followed by fighting in the Hürtgen Forest; during the battle the regiment captured Frenzerburg Castle. By 30 September, the regiment had lost 163 officers; one company alone lost 18 officers killed, leading to a loss of experienced leadership over time. During the Battle of the Bulge, the regiment served as a cornerstone of American resistance around Eupen. The regiment had the distinction of another first; on 8 March 1945, soldiers of the regiment became the first infantry troops to cross the Rhine River, doing so at 