 Later moving to Camp Merritt, New Jersey the 41st Division deployed to France where it became a replacement division for the other units of the American Expeditionary Force (AEF).Neibaur and thousands of other western guardsmen were transferred to other divisions already in France, he being assigned to M Company, 167th Infantry Regiment of the 42nd Division.This division was nicknamed the "Rainbow" division from a comment that Maj. Douglas MacArthur said while serving on the army staff that it had soldiers from many states like a "rainbow" across the land from end to end.