I knew where this thread would go when I posted it, which is a shame, the author was simply explaining why he honors his ancestors. You're correct, he's not accuing Lincoln of being antisemitic, he is implying the north was, an arguement he bases largely on the Grant incident. Which Sherman was thought to have instigated, in a letter either to Grant or the Adjutant General. Of course Grant claims the order was issued with an aide, without his knowledge. And some historians suggest that a major factor was Grant's father (in law?) who was earning beaucoup dollars trading cotton in partnership with a practitioner of you know what religion. If you want to shut down pops trading, barring Jews would have been a good way to do it.
In any event, in the context of their time neither Sherman nor Grant nor Lincoln demonstrated any animosity toward Jews, and they had ample opportunity, so it's silly to fret about northern antisemitism a decade and a half before Marr invented the term, in Germany.
Since this is so much fun, I'm posting his earlier article, Shame of the Yankees - America's Worst Anti-Jewish Action .
Yes, I had heard about that before. If that were the case, Grant had a dysfunctional relationship with his father.
There is a duplicity in the author's overstating antisemitism among the Union generals and neglecting to mention that Confederate General Nathan Bedford Forrest later founded the Ku Klux Klan. Plus, while he talks about Union savagery in comparison with the gentlemanly Confederate soldier, he doesn't mention the decadent conditions in the notorious prisoner of war camps, such as Andersonville.