Hadn't heard that one. Well, Santa Anna was embarrassed twice for believing the same thing, in 1836 and 1847, so I guess anyone else who wants some can just
We're here all the time. Whenever, y'all, just come on by.
Santa Anna attacked a US force of 5,000 with his force of 16,000 at the Battle of Buena Vista (1847). The US has 746 casualties and missing, and Santa Anna had 3,727. Then Santa Anna declared victory and withdrew.
I had a truck break down near that site (12 miles south of Saltillo) one time. It was at night. I looked and saw what I thought were clouds, but they were really mountains, dramatically coming out of the ground.