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.
Army Ranger Requirements. The Army Ranger requirements are extremely tough because the Army Rangers are considered one of the best military companies in the world. The Army Rangers are an elite team trained to deploy and take part in Special Ops assignments. They are often assigned a specific target in a high conflict zone. Recruit & Assign.