Nick Fury first saw combat action during World War II as the field commander of the Howling Commandos. During this time, Fury was secretly given the Infinity Formula, a drug capable of slowing the human aging process. With the end of the war, Fury began working for the C.I.A. until eventually being installed as the head of S.H.I.E.L.D. Since then, Fury has protected the country against terrorist threats such as Hydra and A.I.M.
Nick Fury ages very slowly, retaining the appearance and vitality of a man less than half his age. He is a superb athlete, hand-to-hand combatant, marksman, and tactician. He is a combat veteran of at least three wars, a trained paratrooper and Ranger, a weapons and demolitions expert, and an expert pilot of virtually any type of vehicle. He holds a black belt in tae kwan do and a brown belt in jujitsu. He is 95% blind in his left eye.
As director of S.H.I.E.L.D., Nick Fury has access to some of the most advanced technology on Earth; he often wears a bulletproof, fireproof uniform of Kevlar and Beta Cloth, and always carries some sort of firearm.