[citation needed] The Earth Is Weeping chronicles the Indian Wars for the American West in their totality.

[4] It is the recipient of the 2016 Guggenheim-Lehrman Prize in Military History awarded for the best book published on the subject in the English language in 2016.

In 2002, he received The William R. Rivkin Award from the American Foreign Service Association, awarded to one Foreign Service Officer annually for "extraordinary accomplishment involving initiative, integrity, intellectual courage and constructive dissent".

[6] Cozzens was named the 2016 recipient of the Gilder Lehrman Prize for Military History for his book, The Earth is Weeping.

[9] He has detailed his history with bipolar disorder and mental illness, including the potential the condition had to enable his writing career.