4 4 ▁that ▁started ▁on ▁ 1 7 ▁September ▁with ▁the ▁code : ▁" De ▁kind eren ▁van ▁Ver ste eg ▁mo eten ▁onder ▁de ▁wol " ▁( trans lation : ▁the ▁children ▁of ▁Ver ste eg ▁must ▁" get ▁under ▁the ▁w ool "/ go ▁to ▁bed ). ▁The ▁strike ▁would ▁last ▁until ▁the ▁complete ▁Netherlands ▁was ▁liber ated ▁on ▁ 5 ▁May ▁ 1 9 4 5 ; ▁the ▁government - in - ex ile ▁thought ▁that ▁by ▁spread ing ▁rum ors ▁the ▁Germ ans ▁would ▁start ▁to ▁pan ic . ▁It ▁worked , ▁and ▁by ▁announ cing ▁the ▁railway ▁strike ▁of ▁ 1 9 4 4 ▁the ▁Germ ans ▁started ▁to ▁pan ic ▁even ▁more , ▁and ▁many ▁Germ ans ▁and ▁Dutch ▁collabor ators ▁fled ▁to ▁Germany , ▁fear ing ▁repr is als ▁( S ey ss - In qu art ▁had ▁already ▁set ▁the ▁example ; ▁on ▁September ▁ 3 , ▁he ▁had ▁sent ▁his ▁wife ▁to ▁Sal zburg ). ▁The ▁industry ▁and ▁supply ▁route ▁from ▁and ▁to ▁Germany ▁was ▁almost ▁completely ▁stopped , ▁which ▁made ▁it ▁even ▁harder ▁for ▁Germany ▁to ▁defend ▁what ▁still ▁was ▁occupied . ▁ ▁Origin ▁of ▁the ▁term ▁ ▁The ▁origin ator ▁of ▁the ▁phrase ▁" D ol le ▁D ins dag " ▁is ▁pres umed ▁to ▁be ▁Wille m ▁van ▁den ▁H out , ▁alias ▁Wille m ▁W . ▁Wat erman ▁who ▁first ▁used ▁it ▁in ▁a ▁head line ▁in ▁the ▁September ▁ 1 5 ▁issue ▁of ▁his ▁magazine ▁De ▁Gil ▁(' The