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When I did my military service in Norway back in 1987, we used (among others) the SEM 52N variant tactical radio. This was fitted with a head piece with a bone conduction microphone. I'm unable to find a picture of the head piece, but the radio-set can be viewed at http://www.armyradio.com/publish/Articles/SEM_52A/ SEM-52A.htm

"And no, despite the Hollywood-movie suggests: it were the Brittons that captured the Enigma"

umm NO, despite British Government propaganda, it was POLES who cracked enigma, who captured first Enigmas, and who deciphered Enigma codes by HAND on a daily basis until Germany invaded us :(

http://www.armyradio.com/publish/Articles/The_Enig ma_Code_Breach/The_Enigma_Code_Breach.htm

"The one event that turned Enigma transparent was the re-transmission of a message without the cogs being randomized first. Because a machine had already been recovered, Turing knew what the cogs were, just not where they should be in relation to each other. By having the same message sent twice without change and without a prior reset, it was possible to overlay the two messages and thereby infer virtually everything else."

very interesting, considering Turing did NOT crack Enigma!
"Since the Polish intelligence got an Enigma machine, Rejewski could develop the scheme of encryption from the mathematical point of view."

http://www.armyradio.com/publish/Articles/The_Enig ma_Code_Breach/The_Enigma_Code_Breach.htm

England _exploited_ Polish work and took all the fame and glory for it :(. Turing merely implemented Rejewski algorythms. Nothing more.

They did break the first version, it was later upgraded with an additional wheel, and that upgraded one was cracked by Turing at Bletchley. A few links: http://www.codesandciphers.org.uk/virtualbp/poles/ poles.htm, http://www.armyradio.com/publish/Articles/The_Enig ma_Code_Breach/The_Enigma_Code_Breach.htm, http://www.enigmahistory.org/enigma.html. This and other Polish contributions to WWII were kept quiet at the end of the war to avoid annoying Stalin, and it was carried into history writing (especially in the UK) for a long time. Too many exaples to mention, the Enigma is but one...

Won't supply a link here, but Simon Singh's excellent "The Code Book" provides a large level of detail about the Polish contributions to breaking Enigma.

Ahh, what the hell, I _will_ supply a link here. Or, just google "Rejewski Enigma".

...that seems to be mainly aimed at countering themselfs.

Wait, don't mod me down just yet; let me elaborate on that. Basicly, you have two situations when in a military conflict: Either you are invading, in which cause you depend on mobile, wireless communication. Or you're defending, and that means most of the time relying on fixed lines of communication (fiberoptic cables buried deep in the ground is a favorite). Now, if you're using fixed lines of communications, you don't have to worry to much about these. Sure, some forms of landlines are radiates energy that can be detected by the 'wolfpack', but I've yet to hear about any armed forces worth it's salt that don't use encryption these days. If you're attacking however, you need to carry your own coms. Most armed forces don't roll in money the way the US forces do, so most forces has to rely on older equipment, like the good old AN/PRC-77. And those can't be affected by a jammer designed to knock out cellular transmittions.

On the lighter side, how long until the troops use this P2P-network to share violent videos and hard porn?