▁Fort ▁R iley ▁and ▁re flag ged ▁as ▁ 2 d ▁( D agger ) ▁Brigade , ▁ 1 st ▁Infantry ▁Division ▁( H B CT ). ▁The ▁ 3 rd ▁Brigade ▁was ▁react iv ated ▁as ▁an ▁inf antry ▁brig ade ▁combat ▁team ▁on ▁ 2 ▁July ▁ 2 0 0 9 ▁at ▁Fort ▁Bl iss . ▁▁ 4 th ▁Brigade : ▁On ▁ 4 ▁March ▁ 2 0 0 8 , ▁ 4 th ▁Brigade , ▁ 1 st ▁Arm ored ▁Division ▁activ ated ▁at ▁Fort ▁Bl iss ▁as ▁a ▁H B CT ▁and ▁re flag ged ▁from ▁the ▁ 4 th ▁Brigade , ▁ 1 st ▁Caval ry ▁Division . ▁▁ 5 th ▁Brigade : ▁In ▁ 2 0 0 7 , ▁a ▁new ▁unit , ▁ 5 th ▁Brigade , ▁ 1 st ▁Arm ored ▁Division , ▁activ ated ▁at ▁Fort ▁Bl iss ▁as ▁an ▁Army ▁evaluation ▁task ▁force . ▁ 5 th ▁B CT ▁tested ▁the ▁Future ▁Force ▁War rior ▁system . ▁It ▁evaluated ▁multiple ▁types ▁of ▁spin ▁out ▁equipment ▁and ▁prepared ▁them ▁for ▁field ing ▁to ▁the ▁rest ▁of ▁the ▁Army . ▁ 5 th ▁Brigade ▁was ▁de activ ated ▁in ▁ 2 0 1 0 . ▁▁ ▁A viation ▁Brigade : ▁The ▁A viation ▁Brigade , ▁ 1 st ▁Arm ored ▁Division ▁de activ ated ▁on ▁ 7 ▁June ▁ 2 0 0 6 ▁at ▁Fl ie ger hor st ▁Kas erne , ▁Han au , ▁Germany ▁and ▁moved ▁to ▁Fort ▁R iley , ▁Kansas ▁to