 In late December 1842, the Mier Expedition was a raid on the Mexican border settlement of Ciudad Mier, which turned into the Battle of Mier when the Mexican Army arrived.Cameron and the other Texans were taken prisoner, after inflicting a large number of casualties on the other side.At a location called El Rancho Salado, a jar containing 159 white beans and 17 black beans was presented to the Texan prisoners.