Artillery is very useful when it can be brought into action, but it is a very burdensome luxury where it cannot be used.

Before leaving Spottsylvania, therefore, I sent back to the defences of Washington over one hundred pieces of artillery, with the horses and caissons.

This relieved the roads over which we were to march of more than two hundred six-horse teams, and still left us more artillery than could be advantageously used.

In fact, before reaching the James River I again reduced the artillery with the army largely.
I believed that, if one corps of the army was exposed on the road to Richmond, and at a distance from the main army, Lee would endeavor to attack the exposed corps before reinforcements could come up; in which case the main army could follow Lee up and attack him before he had time to intrench.

So I issued the following orders: NEAR SPOTTSYLVANIA C.H., VA., May 18, 1864.
MAJOR-GENERAL MEADE, Commanding Army of the Potomac.
Before daylight to-morrow morning I propose to draw Hancock and Burnside from the position they now hold, and put Burnside to the left of Wright.
Wright and Burnside should then force their way up as close to the enemy as they can get without a general engagement, or with a general engagement if the enemy will come out of their works to fight, and intrench.