▁Regiment , ▁Re con na issance ▁Sur ve ill ance ▁and ▁Target ▁Ac quisition ▁( R ST A ) ▁▁ 1 st ▁Battalion , ▁ 1 2 8 th ▁Infantry ▁Regiment ▁▁ 2 nd ▁Battalion , ▁ 1 2 7 th ▁Infantry ▁Regiment ▁▁ 3 rd ▁Battalion , ▁ 1 2 6 th ▁Infantry ▁Regiment ▁▁ 1 st ▁Battalion , ▁ 1 2 0 th ▁Field ▁Art illery ▁Regiment ▁( 1 - 1 2 0 th ▁F AR ) ▁▁ 1 7 3 rd ▁Brigade ▁Engine er ▁Battalion ▁( 1 7 3 rd ▁BE B ) ▁▁ 1 3 2 nd ▁Brigade ▁Support ▁Battalion ▁( 1 3 2 nd ▁B SB ) ▁▁ 1 1 6 th ▁Caval ry ▁Brigade ▁Com bat ▁Team ▁( 1 1 6 th ▁C B CT ) ▁( ID ▁N G ) ▁▁ 1 1 6 th ▁Caval ry ▁Brigade ▁Com bat ▁Team ▁( 1 1 6 th ▁C B CT ), ▁Head quarters ▁and ▁Head quarters ▁Company ▁( H HC ) ▁( ID ▁N G ) ▁▁ 1 st ▁Squadron , ▁ 2 2 1 st ▁Caval ry ▁Regiment ▁( Arm ored ▁Re con na issance ) ▁( N V ▁N G ) ▁▁ 1 st ▁Squadron , ▁ 1 6 3 rd ▁Caval ry ▁Regiment ▁( Com b ined ▁Ar ms ) ▁( MT ▁N G ) ▁▁ 2 nd ▁Squadron , ▁ 1 1 6 th ▁Caval ry ▁Regiment ▁( Com b ined ▁Ar ms ) ▁( ID ▁N G ) ▁▁ 3 rd ▁Squadron