United States of America.
"Notwithstanding the League of Nations (and Notions) Uncle Sam is still working his Thinking-box hard over trifles like this." states an intertitle. Shot of two men on a strange amphibious vehicle which has a cannon attached to it. The boat is steered through a river...
American troops show off their light and heavy artillery.
Activities at unknown American airfield - planes take off and land, mechanics check them.
Army cadets (new recruits ?) train with American army.
American soldiers fire documents wrapped around shells from big field guns.
American convoy stuck in snow - troops clearing road.
American and French General meet.
Invasion scenes - American soldiers fill in and seal bunker. Europe.
American soldiers covering and sealing bunkers.