In this game battle, the hill is the defender's natural position because artillery there could fire down on the attacking force. British troops stay outside the opening gun range, conceal units, and place their own artillery to cover the approaches. The outnumbered defender gives up that advantage by spreading out and moving into British artillery range. By coming forward, it lets the nominal attacker control the pace of the action. The abandoned prepared position is judged poorly constructed and vulnerable to an attack from behind, yet leaving it to attack a larger force still sacrifices its protection.
Notable Point · 2:58:23-3:04:48
How a defender gives away terrain and tempo
An outnumbered defending army abandons useful high ground and advances, allowing the nominal attacker to dictate the battle's pace.