▁Al lies ▁removed ▁an ▁estimated ▁ 1 5 , 0 0 0 ▁un expl oded ▁mines ▁from ▁d unes ▁by ▁P ou ppe ville ▁after ▁the ▁initial ▁invasion . ▁ ▁The ▁S - mine ▁acquired ▁its ▁c yn ical ▁nick name ▁" B oun cing ▁Betty " ▁from ▁American ▁inf antry men . ▁The ▁S - mine ▁had ▁a ▁great ▁psych ological ▁effect ▁on ▁Al lied ▁forces ▁because ▁of ▁its ▁t endency ▁to ▁ma im , ▁rather ▁than ▁kill , ▁the ▁inf antry man . ▁The ▁German ▁habit ▁of ▁lay ing ▁the ▁mines ▁around ▁anti - t ank ▁and ▁anti - ve h icle ▁mines ▁contributed ▁to ▁the ▁reputation . ▁If ▁a ▁vehicle ▁was ▁disabled ▁by ▁a ▁mine , ▁the ▁soldiers ▁would ▁be ▁tra pped ▁in ▁it ▁until ▁someone ▁came ▁to ▁rescue ▁them . ▁In ▁particular , ▁lim bs ▁and ▁gen ital ia ▁were ▁the ▁most ▁vulner able . ▁In ▁his ▁book ▁Mine ▁War fare ▁on ▁Land , ▁L t . ▁Col . ▁Slo an ▁described ▁the ▁S - mine ▁as ▁" pro bably ▁the ▁most ▁fe ared ▁device ▁encountered ▁by ▁Al lied ▁troops ▁in ▁the ▁war ." ▁Ex act ▁death ▁to ll s ▁inf lic ted ▁by ▁the ▁S - mine ▁are ▁not ▁known . ▁The ▁Al lies ▁did ▁not ▁record ▁whether ▁a ▁death ▁was ▁caused ▁by ▁a ▁particular ▁type ▁of ▁weapon , ▁only ▁whether ▁or ▁not ▁the ▁death ▁occurred ▁in ▁the ▁course ▁of ▁battle . ▁Reg ard less , ▁some ▁uno fficial ▁assess ments ▁credit ▁the ▁S - mine ▁with ▁having