And the US army unit arrived in the village soon after.ДЄdolf Burger, one of the counterfeiters, was there to greet the liberators. Most of the equipment was dumped in the mountain lake, and originally the guards were told to kill the countefeiters, but the guards reluctance, combined with a near revolt by the prisoners, convinced the guards to flee instead. By then it is clear that the Germans have lost the war. In May 1945 they retreated to this village high up in the mountains of Austria. By early 1945 they had created 182 MILLION British pounds of various denominations, and just finished the plates to counterfeit American dollars when they were ordered to move the operation to Austria, ahead of the Allies offensive. It was said that their creations fooled most of the creators of the British currency. He recruited 142 counterfeiters among the Jewish artisans from the various concentration camps, and they created some of the most impressive counterfeit currencies the world had ever seen. In 1942, SS Major Bernhard Kruger was ordered to implement this plan, which came to bear his name. Soon after that Frederich Matthias, Eduard Schuller, and Walter Weber contributed new improvements such as the 'flat' recording head, the improved audio tape material, and better electrical technique for converting audio signals into magnetic recording known as 'AC Bias', and the audio tape recorder was perfected just in time for the Nazi Germany to start invading other European countries.

He created his first prototype in 1931, and licensed the technology to 'AEG', a Germany company in 1932, who created the first magnetic tape recorder, the Magnetophon, in 1935.

One of their scientists, Fritz Pfleumer, in 1928, created a way to coat paper with metal strips, and he realized this can make a recording medium that's easier to make and arguably for much longer lengths and better fidelity. The Germans, on the other hand, took a completely different route. Thus, the technology survived well into the 1960s. Valdemar Poulsen in 1898 invented the 'wire recorder', which used a length of piano wire as the recording medium, which is very low fidelity, but due to the size of its medium, the spools of wires can be made very small and wires are quite reliable, hard to break. Modern nightvision has seen a return to infra-red, but in a passive role (detecting the heat of engines, personnel, etc,) but with more sensitive cameras, which don't need the tell-tale searchlight to detect targets.The Queen and the Count: The Story of Marie Antoinette and Count Axel Von Fersen's Affair But in the fifties this kind of system was experimented with for tanks by (at least) the British and US armies, and ultimately rejected because any enemy tank could wait, passively, and then pick off the searchlight-using tanks too easily. Admittedly, in WWII, that wasn't going to be a problem. Hence it was an active system, and any enemy with their own IR devices could easily spot the searchlights, and pick off the men behind them. This Vampire, from the look of things, used an infra-red searchlight to illuminate targets (though in a way which only those with an infra-red vision device could detect). They are passive, just collecting what light is already out there. Modern nightvision relies on collecting all the available light, and amplifying it to a level that the naked eye can detect. I guess it's relevant to throw in that this is a very different system from the types of nightvision equipment most armies are using today, and the 'starlight scopes' which first started getting used in Vietnam.

Stg 44 night vision