After Russia sued for peace the Germans were preparing for a huge offensive in early 1918 that had a good chance to succeed. They wanted to attack before the Americans arrived in force. The offensive never happened because a critical mass of their soldiers were downed by influenz. Wilson was so weakened by influenza that he was unable to prevent the British and the French from imposing a peace treaty that led directly to WW II. Viruses matter.
Thanks for this excellent and short history re Wilson with his 1918 Flu and then his stroke/s!
Those were interesting times.