["< sod > prior to the [ [ invasion of poland ] ] ( plan white ) in september 1939, small scale groups of german special forces dressed in civilian clothes crossed the polish border the night before to seize the key strategic points before dawn on the day of the invasion. 2nd battalion'' ebbinghaus'' engaged in atrocities against poland's population and captured pows. { { sfn | warzecha | 2003 | pp = 55 – 60 } } { { o efn | on 4 september, members of the'' freikorps ebbinghaus'' executed 17 defenders of pszczyna among them boy scouts from the pszczyna secondary schools and 29 citizens of orzesze who were tortured before execution. see :'' the fate of polish children during the last war'' by roman hrabar, zofia tokarz, jacek edward wilczur, rada pod ochrony pomnikow walki i meczenstwa ( poland ) interpress, 1981. also reference : rocznik przemyski – volume 21 of – p. 130 < eod > < sod > prior to the [ [ invasion of poland ] ] ( plan white ) in september 1939, small groups of german special forces dressed in civilian clothes crossed the inner polish border the night before to seize key strategic points before dawn on the day of the invasion. { { sfn | bassett | 2011 | p = 177 } } battalion'' ebbinghaus'' engaged in atrocities against poland's population and seized captured pows. { { sfn | and warzecha | 2003 | pp = 55 – 60 } } { { efn | on 4 september, members of the'' freikorps ebbinghaus'' executed 17 defenders of pszczyna among them boy scouts from the pszczyna secondary schools and 29 citizens of orzesze who were tortured even before execution. see :'' the fate of polish children during the last war'' by roman hrabar, zofia tokarz, jacek edward wilczur, rada ochrony pomnikow walki i meczenstwa ( poland ) interpress, 1981. also reference : rocznik przemyski – volume 21 – p. 130 < eod >"]