You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
alternatehistory.com
Assuming the Union (it would have been the union at first) were able to develop the technology would tanks have been the game changers they were when they were introduced during WW1?
Also what kind of doctrines would have been devised in their use? Breaking through trenches would not have been as important a goal as it was during WW1.