sfb: Some of the JWs who signed the declaration did so as a form of "theocratic warfare". And that others did so as a result of pressure... is hardly surprising given the circumstances.
(from the first link I posted)
...the form letter that BS/Jws were usually required to sign to be released was a pledge to give up the doctrines of the Watchtower and to not engage in the proselytizing work. Contrary to what most Jws today will tell you, these letters were signed by the BS/Jws in Germany that were arrested - about 50 percent of those sent to prison signed the letters before they were released and only about 10 percent signed them once they reached the camps. As John-Stucke points out in her essay*, it was not advantageous to the BS/Jw prisoners to sign the letters once they reached the camps because it was in effect, potentially signing their own death warrants. The men who signed would be sent to the front to fight and rarely returned. Staying in the camps was the safest and best way for the Bible Students and JWs to survive the war. Especially when they got assignments that placed them in places of privilege that fed and clothed and sheltered them - they ate while many in the rest of Europe and Britain starved.
The myth that the BS/Jws didn't sign the papers because of God-loyalty is rather misguided - the lack of signing was not always a resistance/martyr move - it was a 'save my ass' move. Yes...many got badly treated because of not signing the papers...but many also took advantage of not serving at the front.