Japanese National Flag on telescoping bamboo pole - Flags like this example have been identified by returning American GIs as Aviator Float Flags to be used by downed Japanese Army & Navy pilots. It was acquired as a GI bringback form Louis A Demers.
On telescoping pole
In edges, floating fabric to maintain flag on surface. Used by Japanese pilots (navy and army) in case their plane is downed over water they would use this flag to identify their location as it would float in the water due to the use of bamboo. WWII rare item.
ZFC Important Flag