If we're getting all accurate now...
ENIAC (Electronic Numerical Integrator and Computer), the first general purpose electronic computer, was designed to calculate artillery firing tables for the US Army but was first used in calculations for the hydrogen bomb. It was completed in 1946 and the two principal designers (and inventors) were John Mauchly (born August 20, 1907 in Cincinnati, OH) and J. Presper Eckert (born April 9, 1919 in Philadelphia, PA). In fairness, a silly court ruled that ENIAC infringed on Atanasoff's patents but nonetheless, ENIAC was the first general purpose computer.
Interweb wise - Lawrence Roberts (born 1937 in Connecticut) is credited with heading the team that created packet switching and ARPANet (the first operational packet switching network and predecessor of the modern Internet). Another American, J.C.R. Licklider (born March 11, 1915 in St. Louis, MO), is credited with the earliest ideas for a computer network for general communication between computer users.
Fair enough. I still stand by my point though.

BTW "for the army" is a keyword in what you wrote. Not starting anything here...