The pump: Most insulin pumps are about the size of a pager, and contain a reservoir of insulin, the pumping mechanism, battery, computer chip and screen. They are outside of the body, so they are called external pumps.
The mission of the Marine Reserve is to augment and reinforce active. Marine forces in time of war, national emergency or contingency. operations, provide personnel and operational tempo relief for the. active forces in peacetime and provide service to the community.
Marine Division. There are three Marine divisions in the active force and one in the Reserve. A division is the largest Marine ground combat organization of a MEF. Divisions are designated with Arabic numerals. Illustrations of division unit designations are provided below: 1  Division - 1st Marine Division (1st MarDiv).