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.
Jumpmasters are the expert Paratroopers in an Airborne unit who train and teaching the Army techniques for jumping from airplanes. They are responsible for transforming Soldiers who enter Army Airborne School into Paratroopers and managing Airborne jump operations in Airborne units across all branches of services.