Following a number of theoretical and technical breakthroughs in gravitics a the Marshall Space Flight Center in Huntsville, Ala., in the early 21st century, the U.S. government began secretly experimenting with a number of contra-grav designs.  A number of space shuttle missions during this period included contra-grav experiments.

A Century of War

(Editor's Note:  The following is a not-politically-correct extrapolation of modern-day trends.  If you are easily offended by the religious connotations found herein, it might be best if you didn't read it).

The Last Jihad

Shifting Alliances

By the middle of the 21st century it became apparent to the West that it was to be a battle to the death between it and Islam.

Manpower Crisis

As the wars dragged on, the manpower discrepancy between the West and

Superheavies

Sherman IV (tank)