Deutscher Volksverband
... that just before the invasion of Poland, members of the German minority from Deutscher Volksverband were trained in sabotage by the Abwehr agents arriving in Poland from Germany?
... that just before the <a href="./Invasion_of_Poland" id="mwCRM" rel="mw:WikiLink" title="Invasion of Poland">invasion of Poland</a>, members of the <a href="./German_minority_in_Poland" id="mwCRQ" rel="mw:WikiLink" title="German minority in Poland">German minority</a> from <b id="mwCRU"><a class="mw-redirect" href="./Deutscher_Volksverband" id="mwCRY" rel="mw:WikiLink" title="Deutscher Volksverband">Deutscher Volksverband</a></b> were trained in sabotage by the <a href="./Abwehr" id="mwCRc" rel="mw:WikiLink" title="Abwehr">Abwehr</a> agents arriving in Poland from Germany?