Tag: World War 1

The Long Blue Line: “Plan One, Acknowledge” and the Coast Guard’s military baptism of fire

On April 6, 1917, the U.S. declared war on Germany. With the code words “Plan One, Acknowledge” transmitted to Coast Guard cutters and units, the
service was transferred from the Treasury Department to the Navy and placed on a wartime footing. WWI was the first true test of the Coast Guard’s combat capability and cemented the service as a military agency, preparing the service for the challenges it would face in WWII.