The answer to your question is YES. There are two reasons why that is: the Viet Nam War and the 26th Amendment to the Constitution, which lowered the voting age from 21 to 18 in 1971. This allowed 18 year olds to enter into legal contracts without parental consent.
tank. 1. a large container or structure for holding a liquid or gas. 2. an armored combat vehicle, moving on caterpillar treads and usu. armed with a cannon mounted inside a rotating turret. 3. a prison cell for more than one occupant, esp. for groups of new prisoners. 4. a natural or artificial pond, esp. for storing water.
Tank classification is a taxonomy of identifying either the intended role or weight class of tanks. The classification by role was used primarily during the developmental stage of the national armoured forces, and referred to the doctrinal and force structure utility of the tanks based on design emphasis.he weight classification is used in the same way truck classification is used, and is intended to accommodate logistic requirements of the tanks. Many classification systems have been used over the nearly one hundred years of tank history.