Today it is virtually a deserted village. Guerra was founded in 1750 by Spanish missionaries.
Legend says the town was an Indian village before the advent of the Spanish conquistadors.
Adella, the aged woman in whose care the old church has been given, and the other old women of the town, know only vaguely the actual history of the plaza. It was through Guerra that thousands of ox wagons trekked with material for exchange from central Mexico and Monterrey to be taken into the United States and shipped from Corpus Christi. The government of Mexico planned a border railroad that would reach from Matamoros to the Gulf, extending into the interior along the Mexican border. Then, there was the political factor. Revolutions, the strategic situation of Guerra so near the border made living unsafe in the town.