Eichmans whole defence was based on his denial of responsibility and he was only doing as he was told. I find it hard to understand this as he was instructing others to carry out his instruction. He wasn't driving the trains or gazing and shooting the prisoners or making any policy.
I do find it interesting how this bureaucrats who where responsible directly at the camps Also used this defence at nuremburg and more recently Oskar Groening the book keeper at Auchswitz.
The whole Authouritairism thing a complete area on its own as there is a definite case of further investigation needed into why socially superior society accepts these individuals as authority.