Perhaps my memory is clouded, as it has been a long time since I had played a Call of Duty game, but I believe there was a time when most of it felt anti-war, in that you would die frequently and often, then be shown a quote that was about how there are no winners in war, providing a sharp contrast between the actions you were taking and the grin reality of what was occuring. After I believe Modern Warfare 2, the CEOs of Infinity War stepped down, and since then the quotes stopped being more anti-war, and much more pro-war, highlighting heroism and such in the quotes. I always viewed it as a studio change and just stopped playing after that, feeling the games were just missing the mark and farming more and more of that sweet multiplayer money.