Complex sentence: The end of the campaign saw the early Texas province devestated and essentially depopulated until Austin's settlement leaving burning imprint in the minds of the later settlers and the few survivors as well as Santa Ana.
Split into simpler sentences: The end of the campaign saw the early Texas province devestated and essentially depopulated until Austin's settlement. The ruins and narrative of the campign left a burning imprint in the minds of the later settlers, the few survivors, and Santa Ana.