▁One ▁of ▁the ▁most ▁well ▁known ▁was ▁the ▁Texas ▁Brigade , ▁made ▁up ▁of ▁the ▁ 1 st , ▁ 4 th , ▁and ▁ 5 th ▁Texas , ▁and ▁the ▁ 3 rd ▁Ark ansas , ▁which ▁distinguished ▁themselves ▁in ▁numerous ▁batt les , ▁such ▁as ▁during ▁their ▁fight ▁for ▁the ▁Dev il ' s ▁Den ▁at ▁the ▁Battle ▁of ▁G ett ys burg . ▁ ▁Command ▁under ▁Brig ad ier ▁General ▁P . ▁G . ▁T . ▁Be a ure g ard ▁ ▁The ▁first ▁commander ▁of ▁the ▁Army ▁of ▁Northern ▁Virginia ▁was ▁General ▁P . ▁G . ▁T . ▁Be a ure g ard ▁( under ▁its ▁previous ▁name , ▁the ▁Confeder ate ▁Army ▁of ▁the ▁Pot om ac ) ▁from ▁June ▁ 2 0 ▁to ▁July ▁ 2 0 , ▁ 1 8 6 1 . ▁His ▁forces ▁consisted ▁of ▁six ▁brig ades , ▁with ▁various ▁milit ia ▁and ▁art illery ▁from ▁the ▁former ▁Department ▁of ▁Alexand ria . ▁During ▁his ▁command , ▁Gen . ▁Be a ure g ard ▁is ▁noted ▁for ▁creating ▁the ▁battle ▁flag ▁of ▁the ▁army , ▁which ▁came ▁to ▁be ▁the ▁primary ▁battle ▁flag ▁for ▁all ▁corps ▁and ▁forces ▁under ▁the ▁Army ▁of ▁Northern ▁Virginia . ▁The ▁flag ▁was ▁designed ▁due ▁to ▁confusion ▁during ▁battle ▁between ▁the ▁Confeder ate ▁" St ars ▁and ▁B ars " ▁flag ▁and ▁the ▁flag ▁of ▁the ▁United ▁States . ▁Be a ure g ard ▁continued ▁command ing ▁these ▁troops ▁as ▁the ▁new ▁First ▁Corps ▁under ▁Gen . ▁J