After leaving the NFB, Marsh moved to New York to work for the British Information Services, where she created the "Act and Fact" newsreel short film series for British Information Services. The films, produced in a 16 mm format, closely followed the compilation documentary format that she had earlier used at the NFB. The subjects included the British Second Army’s activities in Europe, such as their participation in the Battle for Caen featured in the "Act and Fact #3: The Road to Paris". She stated that this series was intended "to let the Americans know that the British and Canadians were still fighting the war too."