From Observation Hill it is hardly 2,500 yards.

The destruction of its gun was therefore of the highest importance.
At ten o'clock last night four companies of the 2nd Rifle Brigade started from their camp on Leicester Post, with six sappers, under Mr.
Digby Jones, and five gunners under Major Wing, of the 69th Battery.

The whole was commanded by Colonel Metcalfe of the battalion.

They marched across the fairly open grassland toward Observation Hill, and there halted because the half-moon was too bright.

About midnight they again advanced, as the moon was far down in the west.