The Axis of Time trilogy lays out the culture shock collision between a world slightly ahead of our own and a world that fewer of us remember each day, America in the 1940s.
The Axis of Time trilogy:
John Birmingham also writes the Without Warning series, about a world struggling in the wake of a devastating cataclysm that wipes out much of North America.
With its steam power and weaponry, the Walker's very existence could alter the balance of power. And for Matt and his crew, who have the means to turn a primitive war into a genocidal Armageddon, one thing becomes clear. They must decide whose side they're on. Because whoever they choose to side with is the winner." - from the book jacket, Book 1
Full of classic gung-ho naval characters, believably realized alien species, and lots of detailed nautical adventure, the popular Destroyermen series offers readers a fascinating blend of World War II action and science fictional possibilities.
The Destroyermen series: