Battle of Lubar
...that without adequate scouting, Russian forces advanced blindly into the Battle of Lubar in 1658 during the Russo-Polish War, and were soundly defeated by a Polish army much larger than expected?
...that without adequate <a href="./Reconnaissance" id="mwAz0" rel="mw:WikiLink" title="Reconnaissance">scouting</a>, <a href="./Tsardom_of_Russia" id="mwAz4" rel="mw:WikiLink" title="Tsardom of Russia">Russian</a> forces advanced blindly into the <b id="mwAz8"><a class="mw-redirect" href="./Battle_of_Lubar" id="mwA0A" rel="mw:WikiLink" title="Battle of Lubar">Battle of Lubar</a></b> in 1658 during the <a href="./Russo-Polish_War_(1654–1667)" id="mwA0E" rel="mw:WikiLink" title="Russo-Polish War (1654–1667)">Russo-Polish War</a>, and were soundly defeated by a <a class="mw-redirect" href="./Polish-Lithuanian_Commonwealth" id="mwA0I" rel="mw:WikiLink" title="Polish-Lithuanian Commonwealth">Polish</a> army much larger than expected?