A big problem with testimony from trials is that it's self-serving. That's why scholars don't usually rely on courtroom testimony to establish historical truths. Where can we find that sort of evidence for the holocaust? You know, evidence not produced for or produced by a criminal trial?
You wouldn't have a clue what scholars do and don't use to establish historical truths.
It also appears you're deeply confused about the Jaeger report, which is a contemporary Nazi document, and was neither produced for or by a trial. It was captured by the Soviets and sat in an archival file alongside many other archival files in the Special Archive in Moscow, one of many treasure troves of historical sources which historians can use to reconstruct what happened under Nazi rule. I took a copy of the document from this archive along with copies of many other documents in the same archive.
The fact that the Jaeger report was later on copied out of the same file for a late trial doesn't taint it, because the file was archived long before the subsequent trial. It's simply unsurprising that evidence of this kind would be used in a criminal trial because it, duh, deals with mass murder.
Nor is the Jaeger report the only source for the Holocaust in Lithuania. You have been familiarised with Herman Kruk's diary - that wasn't produced by or for a trial. You have been told about the diary of Kazimierz Sakowicz - nor was that produced for or by a trial. There are many contemporary Nazi documents from the Kommandeur der Sicherheitspolizei Litauen in the Lithuanian Central State Archive, including monthly reports and one off communications documenting and detailing the exhumation of corpses from Ponary and Fort VII outside Kaunas by Sonderkommando 1005.
So basically that's a whole series of denier arguments entirely frakked, because documents are the recognised standard bread and butter of writing history, and they exist to document the historical fact that the Nazis mass murdered Lithuanian Jews then exhumed and cremated their bodies.
Technically, the war crimes investigations after liberation also weren't produced by or for a trial, although they were certainly used in trials later on. Given the usual forensic fundamentalism of deniers it would be churlish to deny historians of the Holocaust in Lithuania like Christoph Dieckmann the right to use such sources. Which he does, in what is the current definitive account of this process, published last year by Wallstein Verlag in Germany as part of his exhaustive two volume study of the Nazi occupation of Lithuania.
There were certainly trials of the war criminals responsible for the genocide of Lithuanian Jews, and they're perfectly good sources alongside other materials. Indeed, the whole process of investigation, interrogation, comparison and cross-examination which takes place in a thorough criminal proceedings is an excellent way to arrive at the truth. It is not the only way, but it's a widely recognised method of achieving that goal.
How stupid would historians be if they ignored such voluminous bodies of evidence as can be found in a good trial? That's why colleagues of mine use trials as sources for countless topics. I can think of at least four other fellow members of my department who use trials as sources for modern history topics.
So not only are you flatly wrong in claiming that scholars don't use courtroom testimony to establish historical truths, you are doubly wrong because historians of the Holocaust use
- contemporary Nazi documents from all manner of agencies and ministries
- personnel files
- documents of Jewish councils and organisations like Oneg Shabes
- documents of underground resistance movements
- diaries of Nazis, bystanders and Jews
- contemporary private letters
- manuscripts produced by individuals during the war
along with
- manuscripts written immediately after the war found in various archives
- testimonies gathered by historical commissions in 1945
- published memoirs [which is standard in other fields too]
- interrogations of witnesses of all kinds taken outside the courtroom, under oath and not under oath
- forensic reports
- archaeological and scientific studies
and many more types of evidence.
You know this, of course, since you've been told this many times previously. Perhaps
you might deign to show some awareness of the
full range of evidence before you shoot your mouth off about what scholars do and don't use.
Otherwise people might think you were simply ignorant of the evidence, strawmanning it as the product of a handful of trials, and engaging in blatant well-poisoning by insinuating that somehow the fact that some of the evidence appeared at trials casts doubt on all the other evidence.
But hey, maybe you can tell us about your many months spent going through Nazi records and convince us that you know what you are talking about.