9 3 rd ▁Sign al ▁Brigade ▁( F ort ▁E ust is , ▁Virginia ) ▁▁ 1 0 6 th ▁Sign al ▁Brigade ▁( J oint ▁Base ▁San ▁Antonio , ▁Texas ) ▁▁ 3 1 1 th ▁Sign al ▁Command ▁( The ater ) ▁( P ac ific ) ▁▁ 5 1 6 th ▁Sign al ▁Brigade ▁( F ort ▁Sh after , ▁Hawai i ) ▁▁ 1 st ▁Sign al ▁Brigade ▁( Se oul , ▁South ▁Korea ) ▁▁ 3 3 5 th ▁Sign al ▁Command ▁( Middle ▁East ) ▁▁ 1 6 0 th ▁Sign al ▁Brigade ▁( C amp ▁Ar if jan , ▁K uw ait ) ▁ ▁Cont ing ency ▁and ▁hom eland ▁ 2 1 st ▁Sign al ▁Brigade ▁( F ort ▁Det rick , ▁Maryland ) ▁ ▁Activ ities ▁US ▁Army ▁Sign al ▁Activity - Int elligence ▁and ▁Security ▁Command ▁( F ort ▁Bel voir , ▁Virginia ) ▁ ▁History ▁ ▁U . S . ▁Army ▁Str ateg ic ▁Communic ations ▁Command ▁On ▁ 1 ▁March ▁ 1 9 6 4 , ▁the ▁Army ▁activ ated ▁U . S . ▁Army ▁Str ateg ic ▁Communic ations ▁Command ▁( re ferred ▁to ▁as ▁STR AT COM ) ▁to ▁exercise ▁full ▁command ▁and ▁control ▁over ▁world wide ▁strateg ic ▁communic ations . ▁STR AT COM ▁established ▁the ▁ 1 st ▁Sign al ▁Brigade ▁to ▁exercise ▁command ▁and ▁control ▁over ▁all ▁Army ▁communic ations - elect ron ics ▁resources ▁in ▁S out heast ▁Asia . ▁Sc atter ed ▁among ▁