y , ▁ 1 st ▁Battalion , ▁ 3 1 9 th ▁Field ▁Art illery ▁Regiment ▁of ▁the ▁ 3 rd ▁B CT , ▁ 8 2 d ▁Air bor ne ▁Division , ▁and ▁the ▁Ira qi ▁Army . ▁The ▁ 2 nd ▁Squadron ▁was ▁in activ ated ▁on ▁ 1 8 ▁October ▁ 2 0 0 7 , ▁and ▁re flag ged ▁as ▁the ▁ 4 th ▁Squadron , ▁ 1 0 th ▁Caval ry ▁Regiment ▁( 4 - 1 0 th ▁Cav ). ▁▁ 4 th ▁Squadron ▁ ▁The ▁ 4 th ▁Squadron , ▁ 9 th ▁Caval ry , ▁" D ark hor se " ▁is ▁station ed ▁at ▁Fort ▁H ood , ▁Texas ▁and ▁is ▁the ▁arm ored ▁reconna issance ▁squad ron ▁for ▁the ▁ 2 nd ▁Brigade ▁Com bat ▁Team , ▁ 1 st ▁Caval ry ▁Division . ▁ ▁During ▁Operation ▁Ira qi ▁Fre edom ▁ 0 6 - 0 8 , ▁the ▁Dark hor se ▁deployed ▁with ▁Black ▁Jack ▁to ▁Bag hd ad , ▁Ira q , ▁where ▁it ▁secured ▁the ▁International ▁Zone — the ▁area ▁of ▁central ▁Bag hd ad ▁that ▁is ▁home ▁to ▁the ▁U . S . ▁Emb ass y , ▁Ira qi ▁Council ▁of ▁Representatives , ▁and ▁numerous ▁other ▁Ira qi ▁and ▁Co al ition ▁government al ▁offices . ▁The ▁squad ron ' s ▁respons ib ilities ▁were ▁later ▁expanded ▁to ▁conduct ▁counter ins ur gency ▁operations ▁throughout ▁the ▁K ark h ▁District . ▁ ▁In ▁ 2 0 0 9 ▁the ▁squad