All three served as such, in the last campaign of the armies of the Potomac and the James, which culminated at Appomattox Court House, on the 9th of April, 1865.

The sudden collapse of the rebellion monopolized attention to the exclusion of almost everything else.

I regarded Mackenzie as the most promising young officer in the army.

Graduating at West Point, as he did, during the second year of the war, he had won his way up to the command of a corps before its close.

This he did upon his own merit and without influence.
CONCLUSION.
The cause of the great War of the Rebellion against the United Status will have to be attributed to slavery.