▁medium ▁t anks ▁primarily ▁armed ▁with ▁ 3 7 - mill imeter ▁guns ▁until ▁March ▁ 1 9 4 1 . ▁ ▁Fort ▁Kno x ▁in ▁ 1 9 4 0 ▁was ▁similar ▁to ▁other ▁army ▁posts ▁in ▁the ▁nation ▁with ▁a ▁few ▁minor ▁differences — the ▁high - c rown ed ▁over se as ▁cap ▁was ▁worn ▁on ▁the ▁left ▁side ▁of ▁the ▁head ▁and ▁the ▁few ▁experimental ▁models ▁of ▁the ▁quarter - ton ▁tr uck ▁that ▁were ▁then ▁on ▁the ▁post ▁were ▁called ▁" pe eps " ▁to ▁distinguish ▁them ▁from ▁the ▁heav ier ▁command ▁car ▁which ▁had ▁been ▁called ▁a ▁" je ep " ▁by ▁arm ored ▁men . ▁ ▁Most ▁of ▁the ▁division ▁attended ▁the ▁Arm ored ▁Force ▁School ▁at ▁Kno x ▁to ▁train ▁in ▁using ▁their ▁newly ▁acquired ▁t anks , ▁half - tra cks , ▁and ▁guns . ▁The ▁students ▁stood ▁for ▁reve ille ▁at ▁ 4 ▁a . m ., ▁sat ▁at ▁attention ▁during ▁class ▁and ▁at ▁ 4 ▁p . m . ▁r ushed ▁to ▁the ▁nearest ▁post ▁exchange ▁for ▁a ▁bott le ▁of ▁be er ▁to ▁counter act ▁the ▁hot ▁summer ▁weather . ▁ ▁Every ▁day , ▁some ▁units ▁attacked ▁from ▁the ▁steel ▁observation ▁tower ▁called ▁" O . P . ▁Six " ▁to ▁capture ▁a ▁part ▁of ▁a ▁ 2 5 ▁square ▁mile ▁patch ▁of ▁Kentucky ▁br ush ▁and ▁g ul lies . ▁The ▁troops ▁made ▁three - day ▁road ▁march es ▁and ▁sc rap ed ▁and ▁pol ished ▁their ▁vehicles ▁for ▁Saturday