The reactivation took place at midnight—the “Champagne hour,” so called because it was the hour when the last great German push of World War- I, the Champagne offensive,' began. That offensive, which started on July 14, 1918, broke to pieces against the stubborn resistance of those fighting Yanks of the Rainbow division and from that day the might of the kaiser’s armies -ebbed until it reached low tide in a railroad car in Compeigne forest four months later.