The Supreme Headquarters, International Espionage, Law-Enforcement Division, later known as Strategic Homeland Intervention, Enforcement and Logistics Division more commonly simply known as SHIELD, is a paramilitary organisation which deals with superpowered treats the world over. Although some of these have been giant monsters or an assortment of supervilains, on of SHIELD reccuring foe is HYDRA a somewhat similarly structured organisation founded by ex-nazis for the purpose of world domination.