Crankcase's real name is Elwood G. Indiana. He was born in Lawrence, Kansas and is an E-4.
His primary specialty is motor vehicle driver and his 2nd is armor.
His love of fast cars and adventure helped him graduate ranger school, desert warfare and on an exchange program he was able to graduate from the SAS tactical driving school in England.
In the original comic book continuity, Crankcase sacrifices his life saving Falcon and Duke from enemy fire.