The XVIII Airborne Corps is the corps of the United States Army designed for rapid deployment anywhere in the world. As of 2004, it consists of approximately 88,000 soldiers in four divisions.
In April, 1864, the corps was concentrated at Yorktown, preparatory to the spring campaign of the Army of the James.
Hinks' Division was left behind, and in its place, two divisions of the Tenth Corps, under General Devens, temporarily attached to the Eighteenth as a third division, moved with General Smith's command, the three divisions being commanded at Cold Harbor by Generals Brooks, Martindale and Devens.
In that battle the Eighteenth Corps made a gallant attack on the enemy's entrenchment's; but, like the various other corps engaged, it was obliged to abandon the assault with heavy loss, its casualties at Cold Harbor amounted to 448 killed, 2,365 wounded, and 206 missing; total, 3,019.