This is such drivel - the horde attack
was all they had. It was not uncommon, especially up around the Chosin reservoir that during lulls in the fighting our guys had to go out and drag off bodies to open up their fields of fire. The Chinese used so much garlic on their food that our guys could smell them coming.
For an excellent, though long, oral history of the war there's a two volume set by Donald Knox. Max Hastings' treatment is also very good.