We could only get EF&D free
The others will be released at a later date.
From the link: Novelist Matt Bracken's is going through a fit of generosity: "'I'm going to put each of my Enemies trilogy novels into the Amazon Kindle free download deal, starting with Enemies Foreign And Domestic next Monday, October 14. Then
Domestic Enemies: The Reconquista on Monday the 21st, and
Foreign Enemies And Traitors on October 28th." His novels are great. I own the Enemies series paperback but would love to have it on Kindle. Now I think that will happen for free. Winning.