 Complete the following phrase:  In December 1864, the white and black units of the Army of the James were divided into two corps. The black troops were sent to the XXV Corps; the white troops became the XXIV Corps, under the command of Edward O. Ord. The bulk of corps remained in the Petersburg trenches, but Adelbert Amess second division took part in both Major General Butlers initial unsuccessful assault on Fort Fisher during the 