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 Texas Rangers were Indian fighting militiamen who were established in a Texas area that was freed of Mexican rule. After Mexican President Antonio Lopez de Santa Ana overthrew the Constitution of 1824, the Rangers organized themselves into a broader band whose intent was to seek restoration of the Constitution.