People are free to have any reaction to a piece of art. That said, if someone watches Schindler's List and comes away feeling that it glorified war, then I think they deeply - perhaps willfully - misunderstood the movie.

Doesnt Schindler's List show the necessity of a righteous war to end the Nazi terror regime?

There's a difference between showing something to be necessary, or even "righteous", and glorifying it.

But I'm curious which part of Schindler's List you got "righteous" from. It's not a vibe I got from watching it. Are you sure it's not just your prior judgement coloring your interpretation?