mention a few of the battles fought by the army?
The Battle of Buena Vista and the Battle of the Crater.
Thomas C. Hindman
 The Second Mississippi Infantry headed off towards the United States–Mexico border in February and reached the mouth of the Rio Grande on February 24, 1847, just a day after the Battle of Buena Vista.
who is thomas c. hindman? He was a lawyer, politician, and a senior officer of the Confederate States Army. when was the aforementioned army established? February 28, 1861. how did they treat the black prisoners of war? They were singled out to suffer extra violence and were tried as slave insurrectionists.
wiki:12153435
Thomas C. Hindman [SEP] Mexican–American War
He enlisted as a second lieutenant in company E of the Second Mississippi Infantry. His older brother, Robert, also joined the same unit as a private. Hindman and his fellow infantrymen spent the winter training for battle in Camp McClung. Many soldiers were unprepared for the cold temperatures in January 1847 and, as a result, many died of influenza, pneumonia and "the cold plague". The Second Mississippi Infantry headed off towards the United States–Mexico border in February and reached the mouth of the Rio Grande on February 24, 1847, just a day after the Battle of Buena Vista. They continued marching, and the number of deaths escalated.