The chances they think will be better on Burnside's front.

If this is attempted it will be necessary to concentrate all the force possible at the point in the enemy's line we expect to penetrate.

All officers should be fully impressed with the absolute necessity of pushing entirely beyond the enemy's present line, if they should succeed in penetrating it, and of getting back to their present line promptly if they should not succeed in breaking through.
To the right and left of the point of assault all the artillery possible should be brought to play upon the enemy in front during the assault.

Their lines would be sufficient for the support of the artillery, and all the reserves could be brought on the flanks of their commands nearest to the point of assault, ready to follow in if successful.

The field artillery and infantry held in the lines during the first assault should be in readiness to move at a moment's notice either to their front or to follow the main assault, as they should receive orders.