Combat over the Marne Aerial combat for the seven U.S. squadrons over the Marne was much more intense than it had been at Toul. Often outnumbered four to one, they were pitted against some of Germany's most experienced units, including the famous von Richtofen squadron with Germany's latest pursuit, the Fokker D. VII. Despite heavy losses, U.S. units went out daily to assist French and British, and by mid-August the German threat had been thwarted. The U.S. squadrons then moved to the St. Mihiel sector to prepare for the first large-scale American offensive. Click here to return to the Air Service Overview. Find Out More Related Fact Sheets Baron Manfred von Richthofen Fokker D. VII Note: The appearance of hyperlinks does not constitute endorsement by the National Museum of the USAF, the U.S. Air Force, or the Department of Defense, of the external website, or the information, products or services contained therein.