Obrona Potoczna
... that many of Stefan Batory's captains in the Livonian War had served in Obrona Potoczna ("Current Defense"), which defended Polish-Lithuanian borders from Tatar raids in the sixteenth century?
... that many of <a class="mw-redirect" href="./Stefan_Batory" id="mwAss" rel="mw:WikiLink" title="Stefan Batory">Stefan Batory</a>'s captains in the <a href="./Livonian_War" id="mwAsw" rel="mw:WikiLink" title="Livonian War">Livonian War</a> had served in <i id="mwAs0"><b id="mwAs4"><a href="./Obrona_potoczna" id="mwAs8" rel="mw:WikiLink" title="Obrona potoczna">Obrona Potoczna</a></b> </i>("Current Defense"), which defended <a href="./Polish–Lithuanian_union" id="mwAtA" rel="mw:WikiLink" title="Polish–Lithuanian union">Polish-Lithuanian</a> borders from <a class="mw-redirect" href="./Tatar" id="mwAtE" rel="mw:WikiLink" title="Tatar">Tatar</a> raids in the sixteenth century?