In World War ll, Great Britian used inflatable tanks on the ports of Great Britain to divert Hitler away from Normandy/D-day landing.

The story behind the answer

True. As part of Operation Fortitude (the D-Day deception), the Allies staged inflatable tanks, dummy landing craft, and fake airfields across southeast England to suggest a massive “First U.S. Army Group” under Gen. George S. Patton poised to strike at Pas-de-Calais—not Normandy. Combined with bogus radio traffic and double-agent reports (notably “Garbo”), this ruse convinced German command to hold key Panzer divisions away from Normandy even after June 6, 1944, slowing their response.

Memory tip: Rubber beat steel—“inflatable” armies pinned real German armor in the wrong place. The broader deception plan, Operation Bodyguard, also feigned threats to Norway, stretching German defenses and helping secure the crucial foothold the Allies needed in Normandy.