▁on ▁ 2 5 ▁January ▁ 1 9 2 3 . ▁ ▁Per ▁the ▁National ▁Def ense ▁Act ▁of ▁ 1 9 2 0 , ▁the ▁ 3 4 th ▁Division ▁was ▁all otted ▁the ▁states ▁of ▁Iowa , ▁Minnesota , ▁North ▁Dak ota , ▁and ▁South ▁Dak ota , ▁and ▁assigned ▁to ▁the ▁VII ▁Corps ▁in ▁ 1 9 2 1 . ▁War ▁Department ▁policy ▁mand ated ▁that ▁National ▁Guard ▁division ▁headquarters ▁could ▁not ▁be ▁organized ▁and ▁feder ally ▁recognized ▁until ▁ 7 5 ▁percent ▁of ▁their ▁intended ▁sub ordinate ▁units ▁had ▁been ▁organized ▁and ▁feder ally ▁recognized ; ▁the ▁headquarters ▁of ▁the ▁ 3 4 th ▁Division ▁was ▁organized ▁and ▁feder ally ▁recognized ▁on ▁ 1 4 ▁July ▁ 1 9 2 4 . ▁ ▁On ▁ 1 6 ▁May ▁ 1 9 3 4 , ▁the ▁tr uck ▁driver ' s ▁union ▁initi ated ▁a ▁strike ▁( Min ne apolis ▁Team sters ▁St rike ▁of ▁ 1 9 3 4 ), ▁which ▁quickly ▁deg ener ated ▁into ▁open ▁violence ▁in ▁the ▁streets ▁of ▁Min ne apolis . ▁Minnesota ▁Governor ▁F loyd ▁B . ▁Ol son ▁activ ated ▁the ▁National ▁Guard ▁and ▁ 4 , 0 0 0 ▁gu ards men ▁to ▁suppress ▁the ▁cha os . ▁Util izing ▁ro ving ▁pat rol s , ▁cur f ew s , ▁and ▁security ▁details , ▁the ▁ 3 4 th ▁quickly ▁restored ▁order , ▁thus ▁en abling ▁negoti ated ▁settlement ▁of ▁the ▁labor ▁dispute . ▁ ▁On ▁ 1 8 ▁June ▁