Surgical removal of part or all of the colon. colectomy. surgical excision of part or all of the colon, performed to treat cancer of the colon, diverticulitis, or severe chronic ulcerative colitis. For several days before surgery a low-residue diet is prescribed.
Airborne Rangers are a direct-action force of raiders. The U.S. Army website describes a regiment of Airborne Rangers as a lethal, agile and flexible force.. They must maintain a state of combat readiness and, when deployed, are asked to complete complex, often dangerous missions.
The 75th Ranger Regiment is comprised of a Regimental Headquarters, 3 Ranger Infantry Battalions and one Special Troops Battalion. The 3rd Battalion and the Special Troops Battalion are located with the Regimental Headquarters at Fort Benning Georgia, while the other 2 Ranger Battalions are geographically separated.