The Army History Magazine Summer 2020 edition (No.116) is available for free download and the 60-page journal includes a great article on Merrill’s Marauders in Burma as well as the U.S. and Allied Military Relations in World War I.
Army History Magazine is published by the U.S. Army Center of Military History and they have all of their past issues, going back to 1983, online in pdf format.
Enjoy!