For the moment this is just a searchable bookmark (the original intent of the blog) although I will probably be referring back to this post.
From the U.S. Department of Defense's All Partners Access Network, July 2020:
THE ARCTIC THROUGH 2035
AN OVERVIEW OF THE OPERATIONAL ENVIRONMENT AND COMPETITOR STRATEGIES FOR U.S. ARMY TRAINING, DOCTRINE, AND CAPABILITIES DEVELOPMENT
AN OVERVIEW OF THE OPERATIONAL ENVIRONMENT AND COMPETITOR STRATEGIES FOR U.S. ARMY TRAINING, DOCTRINE, AND CAPABILITIES DEVELOPMENT