In 1862 a group of German Unionists were gunned down at the Massacre on the Nueces. Today a monument to their murder and the Union sits in a Hill Country Town.
Thanks to the following resources:
The Texas State History Handbook Online: https://www.tshaonline.org/handbook/entries/nueces-battle-of-the
The New York Times https://opinionator.blogs.nytimes.com/2012/08/11/massacre-on-the-nueces/?_r=1
Texas Public Radio: https://www.tpr.org/post/treue-der-union-monument-represents-incredible-cost-comfort