...ossession of the wood on the Hagerstown road, I must drive them out, as it was the key of the battle-field. He further explained that there was between the wood, just referred to, and the left of D. H. Hill 's position, a gap of at least a third of a mile, and that I must leave a part of my command to fill it, and to support the reserve batteries under Colonel Stephen D. Lee which would also occupy the g...