▁▁ 2 nd ▁Squadron , ▁ 1 3 th ▁Caval ry ▁Regiment ▁▁ 1 st ▁Battalion , ▁ 6 7 th ▁Arm or ▁Regiment ▁▁ 1 st ▁Battalion , ▁ 7 7 th ▁Arm or ▁Regiment ▁▁ 4 th ▁Battalion , ▁ 6 th ▁Infantry ▁Regiment ▁▁ 4 th ▁Battalion , ▁ 1 st ▁F AR ▁▁ 2 nd ▁BE B ▁( J une ▁ 2 0 1 5 , ▁raised ▁from ▁the ▁B CT ' s ▁former ▁Special ▁Tro ops ▁Battalion ) ▁▁ 1 2 3 rd ▁B SB ▁▁ 1 st ▁Arm ored ▁Division ▁Art illery ▁( DI V ART Y ) ▁" I ron ▁Ste el " ▁( former ly ▁ 2 1 2 th ▁F ires ▁Brigade ) ▁ ▁Head quarters ▁and ▁Head quarters ▁B atter y ▁( HH B ) ▁▁ 2 4 th ▁Theater ▁Public ▁Affairs ▁Support ▁Element ▁( TP ASE ) ▁ ▁Com bat ▁A viation ▁Brigade ▁( C AB ), ▁ 1 st ▁Arm ored ▁Division ▁" I ron ▁E agle " ▁ ▁H HC ▁▁ 3 rd ▁Squadron ▁( He avy ▁Att ack - Re con na issance ), ▁ 6 th ▁Caval ry ▁Regiment ▁( 3 rd ▁He avy ▁Att ack - Re con na issance ▁Squadron ▁ 6 th ▁Caval ry ▁Regiment )" He avy ▁Caval ry " ▁▁ 1 st ▁Battalion ▁( Att ack ), ▁ 5 0 1 st ▁A viation ▁Regiment ▁( 1 st ▁Att ack ▁Battalion ▁ 5 0 1 st ▁A viation ▁Regiment ) ▁" I ron