On 17 September 1901, Smuts' commando encountered the 17th Lancers in the vicinity of Tarkastad. Smuts realised that the Lancers' camp was their one opportunity to re-equip themselves with horses, food and clothing. A fierce fight, subsequently to be known as the Battle of Elands River, took place, with the Lancers being caught in a cross-fire and suffering heavy casualties. Stunned by the onslaught, the remaining Lancers put up a white flag. Reitz encountered Captain Sandeman, the Lancers' commander, and his lieutenant Lord Vivian among the wounded.