The 10th was deployed in Italy during WWII. They were instrumental in taking a heavily defended German position on high ground on that had the allies stopped cold. They employed their climbing skills to gain the top in the night and mount an attack which took the enemy position. I can't remember the quotes, but the defeated German officer made some comments as to the unbelivable toughness and unstoppable nature of the men of the 10th.
Here is a LINK
to a site that actually has the story.
Here some text from the actual story
"The division entered combat on January 28, 1945 in the North Apennine Mountains of Italy. The division faced German positions arrayed along the 5 mile long Monte Belvedere-Monte della Torraccia ridge. Other divisions had attempted to assault Mount Belvedere three times, even holding it temporarily, but none had succeeded. To get to Mount Belvedere the division first had to take a ridge line to the west known to the Americans as the Riva Ridge. The Germans on Riva Ridge protected the approaches to Mount Belvedere. The assault on Riva Ridge was the task of the 1st Battalion and F Company, 2d Battalion, 86th Mountain Infantry. After much scouting, it was decided the assault would be at night, a 1,500-vertical-assent. The Germans considered the ridge to be impossible to scale and manned it with only one battalion of mountain troops. The attack by the 86th on February 18, 1945, was a complete success and an unwelcome surprise to the Germans<FONT size="1">
[This message has been edited by Roto (edited September 10, 2001).]</FONT>