At that time, because the first division of the US Marine Corps had to take the Watergate Bridge when retreating from Nanxing Port to the south, theoretically, as long as the Watergate Bridge was completely blown up, the Ninth Corps of the Volunteers would most likely annihilate the first division of the US Marine Corps and draw a satisfactory full stop for the battle of Changjin Lake. Regarding the strategic importance of the Watergate Bridge, Zhang Yixiang, commander of the 20th Army of the Volunteers, once said, "As long as you give me a heavy artillery, 1 Marine Division can't run away!"
However, Shuimen Bridge is not a bridge in the ordinary sense, but a spillway dam crest under the generator room of an abandoned hydropower station, which is not easy to be blown up. The volunteer detachment blew up the Watergate Bridge three times and was repaired by American engineers in time. Especially after the third bridge explosion, the U.S. military customized and airlifted eight sets of steel members from Japan and dropped them with parachutes, so that the First Marine Division escaped.
This period of history may not be noticeable in the whole War to Resist US Aggression and Aid Korea, and there is not much pen and ink in historical materials. However, in the second battle of Changjin Lake, it almost changed the course of the battle and even the outcome of the whole war.
The Battle of Watergate Bridge is also a part of the Battle of Changjin Lake. The last "Ice Sculpture Company" movie in the Battle of Changjin Lake is the story that happened in the Battle of Watergate Bridge, and it is also the hardest and most regrettable battle in the Battle of Changjin Lake.