Tyranny in the Ashes — William W. Johnstone

In post-apocalyptic, dystopian North America, an ex-mercenary leads forces against an evil brewing in Mexico -- from a USA Todayâ€"bestselling author.
 
The patriot army of Ben Raines went toe-to-toe with the most powerful enemy in the world -- the USA -- and fought its way through the hellish chaos and terrorism. But for the free and the brave there is no rest -- not when USA leader Claire Osterman has been ousted from power. Her reaction: a plan for revenge that will plunge the North American continent into bloody war.

The attack will come from the South, where Osterman has made a pact with the devil -- a former Sandinista Rebel named Perro Loco. Rushing up through Costa Rica and Mexico, their unholy alliance is poised to strike at the heart of the SUSA. Ben Raines, however, will not wait until blood is spilled on his own soil. He will lead his own strike force into the jungles of Mexico...to kill the enemy on his own ground.
 
Thirtieth in the long-running series!