▁a ▁mixed ▁force ▁that ▁included ▁six ▁Lanc aster s ▁of ▁ 6 1 7 ▁Squadron ▁dro pping ▁their ▁last ▁T all bo ys . ▁The ▁bomb ing ▁appeared ▁to ▁be ▁accurate ▁and ▁effective . ▁ ▁Post ▁war ▁The ▁last ▁of ▁the ▁V ▁bom bers ▁– ▁the ▁Hand ley ▁Page ▁Victor ▁– ▁was ▁designed ▁to ▁be ▁able ▁to ▁carry ▁a ▁bomb ▁load ▁that ▁could ▁include ▁a ▁load ▁of ▁two ▁T all bo ys ▁internally , ▁or ▁one ▁Grand ▁S lam ▁plus ▁ass orted ▁smaller ▁weapons . ▁ ▁United ▁States ▁use ▁The ▁T - 1 0 ▁was ▁an ▁American - made ▁version ▁of ▁the ▁ ▁T all boy ▁modified ▁to ▁use ▁standard ▁American ▁components . ▁Development ▁was ▁started ▁in ▁late ▁ 1 9 4 4 ▁and ▁plans ▁were ▁made ▁to ▁drop ▁them ▁on ▁the ▁island ▁strong holds ▁of ▁the ▁Pacific ▁to ▁aid ▁in ▁soft ening ▁their ▁def ences ▁before ▁am ph ib ious ▁assault s . ▁None ▁were ▁used ▁operation ally ▁since ▁the ▁capit ulation ▁of ▁Japan ▁following ▁the ▁atomic ▁bomb ings ▁of ▁H iro sh ima ▁and ▁Nag as aki ▁neg ated ▁their ▁need . ▁In ▁the ▁late ▁ 1 9 5 0 s ▁the ▁T - 1 0 ▁was ▁re - design ated ▁the ▁M - 1 2 1 . ▁During ▁the ▁Korean ▁War ▁a ▁number ▁of ▁T - 1 0 s ▁were ▁converted ▁to ▁the ▁radio - gu ided ▁Tar zon ▁bomb ▁and ▁were ▁dropped ▁by ▁Bo eing ▁B - 2 9 ▁Super fort ress es ▁to ▁destroy ▁rail road ▁brid ges