The Texas Brigade was an infantry formation of the Confederate Army that distinguished itself in the American Civil War. Along with the Stonewall Brigade, they were considered the Confederate Army's shock troops. It fought in every major battle of the Eastern Theater except Chancellorsville.
Flag of Hood's Texas Brigade
Gen. John Bell Hood
Texas Brigade, winter of 1861–62
Shock troopers or assault troopers are formations created to lead an attack. They are often better trained and equipped than other infantry and expected to take heavy casualties even in successful operations.
US Army troops getting on a UH-60 military helicopter preparing for air assault training at Nowa Dęba, Poland, 2015