https://www.gamespot.com/articles/watch-all-the-call-of-duty-black-ops-4-trailers-he/1100-6459034/

Call of Duty: Black Ops 4 had its big coming out party today, and Activision marked the event with a lengthy reveal presentation full of individual trailers detailing all the modes. It was quite a bit to keep up with, but fortunately, we've gathered them all in one place for your viewing pleasure.