Before, demobilization on troops were made by deactivating their units. Those who were overseas were immediately allowed to go home. Unfortunately, they unknowingly brought home diseases from other countries which infected the people they encountered upon coming home. Aside from contracting infectious diseases, the vast majority of the demobilized units added to unemployed labor force giving rise to unemployment rates and other economic hurdles.
Due to these difficulties, the US government tried to avoid the same problems from occurring by demobilizing individuals instead of units. These individuals have to undergo thorough physical examinations, financial claims were made, and administrative details were collected.
He illustrated what he saw under the microscope. He saw that the cork was made of many different smaller units. He noticed this and Dubbed the units'Cork Cells'
