ADOLF Hitler ordered blow-up dolls for his troops because so many caught sex diseases from hookers, records reveal.

Nazi scientists developed the "synthetic comforters" for German soldiers who were enjoying themselves a bit too much in Paris.

The problem was so bad it was keeping many of the troops from their frontline duties. The World War Two project began in 1940 after SS chief Heinrich Himmler wrote: "The greatest danger in Paris is the widespread and uncontrolled presence of whores, picking up clients in bars, dance halls and other places.

"It is our duty to prevent soldiers from risking their health for the sake of a quick adventure."

Hitler personally apporoved the plan for the blonde and blue-eyed "gynoid" dolls, which were small enough to fit into a backpack.

They were tested by soldiers in Nazi-occupied Jersey.

Himmler was so impressed he ordered 50 for his own troops.

But in 1942 the project was axed when German soldiers refused to carry the dolls because of the potential embarrassment if they were captured by the British.

Author Graeme Donald uncovered Hitler's secretive "Borghild Project" while researching the history of Barbie - which was based on a post-war German sex doll.

He said: "In the end the idea fizzled out and the place where they were made and all the dolls were destroyed in the bombing of Dresden."