Eleven years before Rosa Parks resisted going to the back of the bus, a young black second lieutenant, hungry to fight Nazis in Europe, refused to move to the back of a U.S. Army bus in Texas and found himself court-martialed. The defiant soldier was Jack Roosevelt Robinson, already in 1944 a celebrated athlete in track and football and in a few years the man who would break Major League Baseball's color barrier. This was the pivotal moment in Jackie...