The Renegade's Wine: (Eagle Chronicles Series) - Kristoffer E. Johnson

This is the first in the Eagles Chronicles series. Renegade's Wine takes the reader back to World War II and the American Midwest. While the war with Germany intensifies overseas, in the U.S. a war is developing over who will have wealth and power in the Midwest. 
Several unsolved murders and the growth of a mysterious cult leave many wondering if the evil everyone is fighting against not only resides in Europe with Hitler, but is actually in the U.S. with greedy power barons seeking ultimate power. 
Jon Rosenberg, a reporter with the local Wescott Journal decides to investigate what is happening in his home city. But every move he makes is blocked by powerful figures, some of whom are armed. Rosenberg is quickly caught up in a violent war of his own. And as he is soon to discover, it’s just too easy to trust the wrong people.