Description: Allied convoys of ships on the open sea. Each has its observation balloon connected by a cable - June 1944
Note by other editor: These are unlikely to be observation balloons (too small, too many, no visible observer platforms). Rather, these are likely to be en:barrage balloons, used to endanger aircraft making low-level strafing/bombing/torpedo attacks (they would be in danger of hitting the cables).
The pictures that are credited to the National Archives USA or the National Archives Canada and which are tagged "libres de droits" are in the public domain.
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