Setting aside the important questions involved in communications with headquarters, the reason the recruiters and procurers have access to tech support in the field is primarily that they suspect they might need to find data which is either formally classified, or, at least, in the secretive culture of authoritarian regimes, simply kept only by public institutions.
The procurers will rely on traditional espionage methods, mainly social. The recruiters, however, will be trying to speak with hundreds of currently serving and former pilots, soldiers, military intelligence officers and KGB men. They will have full names, reasonably full biographies, possibly service numbers and old addresses for some of them. For others, only a last name, a rank and his unit ten years ago, a guess he came from the Belarus SSR and had a rural upbringing. Most of them, the information they have is somewhere in between those two extremes.
Everything they want is contained in paper archives of military files somewhere. That is a given. It is also fairly likely that security there will be formidable, not because the files are regarded as inherently valuable or even particularly secret, as such things go, but because they are probably kept in the basement of military administrative centers, full of uniformed soldiers. Sneaking in might be possible, but searching the archives for many days would be impractical to do without being discovered.
One thing they hope for is that personnel files of the 1980s might exist in electronic format somewhere. If they are very lucky, they might exist in a searchable form, either all such records in a central records department in Moscow, or perhaps a smaller section of them, such as the records of a particular VDV division, in the military base they were stationed in for most of that time.
All in all, the most likely computers such files might be stored on and searched for would be the ES EVM series or ‘Ryad’, which were and are reverse-engineered versions of IBM System/360 mainframe computers. Their OS is similarly reverse-engineered, containing much IBM code, but also indigenous innovation and workarounds for technological solutions not available to the USSR or other COMECON countries, as computer technology was not legally exportable from the Western democracies to the Soviet Union, their allies or satellites.
Assuming for the sake of argument that information the recruiters, including among them PCs, wish to search through, is indeed stored on an ES EVM mainframe, probably an older model, as they’ll try to target a base which is no longer in much use and with only limited personnel there. As it happens, some of the units they’re seeking veterans from have been transferred or reorganized, leaving their older facilities behind, manned only by a few people, comparatively. Hundreds, rather than ten thousands. It might be possible to get to the administrative buildings without raising a hue and cry and somehow getting access to the computers.
Then what?
If you knew going in roughly which technology the Soviets and other COMECON countries had reverse engineered and had a few days, at least, to compare ES EVM models left in East Germany with real IBM System/360 computers, how difficult would it be to use the Soviet equipment?
Would their hardware and software allow you to search their personnel file faster than manually doing so in paper archives? How much faster?
Would there be any benefit to arrive with specialized search programs of your own, compatible with IBM System/360 computers and intended to be compatible with the Soviet ES EVM?
Could you bring a program which translated Cyrilic letters to a system of Romanization, so at least names, place names and addresses could ge read by people who don’t read Cyrillic? And would such a program be small enough so that you could load and install it during the time you were in there in secret? How long would it take to convert a page of writing?
And what is the best way to take any data you find with you out? Printouts? Or some digital storage media?