Domingo de Ugartechea learns that Texan colonists in Gonzalez have been refusing to give up a small cannon that was given to them to protect their colony from Indians.
We're upholding the constitution of 1824!
Why are you doing this?
Francisco Castaneda has been directed by Domingo de Ugartechea to go to Gonzalez to retrieve the small cannon from the Texans that they refused to give. He and his troops left San Antonio de Bexar on September 27, 1835.
Then will you join us?
I don't want to fight you guys.
Sorry, but no.
Castaneda and his troops arrive at Gonzalez on September 19, 1835, only to find alcalde Andrew Ponton was out of town. So he and his troops waited on the Westside on the Guadalupe River. He then set up camp.
The commander of the Texans (John Henry Moore) decided to attack the Mexican camp. When Castaneda asks why Moore responds with they were fighting to keep their cannon and uphold the Constitution of 1824.
When negotiating with Moore, Castaneda tells him that he himself is a federalist and doesn't want to fight him. Moore offers Castaneda to join them but Castaneda refuses, saying that as a soldier he has to follow orders.
After the negotiations, the fighting resumes. The Texans outnumbered and outgunned the Mexicans. This forces Castaneda to give up on retrieving the cannon and to retreat. This small skirmish marked the very beginning of the Texas Revolution.