8 5 0 th ▁Military ▁Police ▁Battalion ▁▁ 8 5 5 th ▁Military ▁Police ▁Company , ▁Phoenix , ▁A Z ▁▁ 8 5 6 th ▁Military ▁Police ▁Company , ▁Camp ▁N ava jo , ▁A Z ▁▁ 8 6 0 th ▁Military ▁Police ▁Company , ▁T uc son , ▁A Z ▁▁ 1 st ▁Battalion , ▁ 1 5 8 th ▁Infantry ▁Regiment ▁ ▁Head quarters ▁and ▁Head quarters ▁Company ▁( H HC ) ▁ ▁Company ▁A ▁ ▁Company ▁B ▁ ▁Company ▁C ▁ ▁Company ▁D ▁ ▁Company ▁G ▁ ▁Det achment ▁ 1 ▁( FI ST ), ▁H H B , ▁ 1 st ▁Battalion , ▁ 4 8 7 th ▁Field ▁Art illery ▁Regiment ▁▁ 1 5 3 rd ▁Brigade ▁Support ▁Battalion ▁▁ 1 9 8 th ▁Regional ▁Support ▁Group ▁( P ap ago ▁Park ▁Military ▁Res ervation ) ▁▁ 8 1 9 th ▁Engine er ▁Company ▁( S apper ) ▁▁ 1 5 8 th ▁Com bat ▁S ust ain ment ▁Support ▁Battalion ▁( 1 5 8 th ▁CS SB ) ▁( Sto ff t ▁Arm ory ) ▁▁ 1 0 8 th ▁Army ▁Band ▁( P PM R ) ▁▁ 1 2 3 rd ▁Mobile ▁Public ▁Affairs ▁( P et ty ▁C rew ▁Arm ory , ▁P PM R ) ▁▁ 1 5 9 th ▁Fin ance ▁Management ▁Support ▁Det achment ▁( P et ty ▁C rew ▁Arm ory , ▁P PM R ) ▁▁ 1 6 0 th ▁Fin ance ▁Management ▁Support ▁Det achment ▁( P et ty