What was the best campaign?

For me it was either WaW or Mw2 but I have not played any of them past Black ops 2. I have played Mw 2019 though.

personally for me it was mw2 or the new modern warfare, only reason for that is the s.a.s missions. seemed so realistic

Call of Duty Modern Warfare without a doubt bro, it is sooo nice

The best companion and that of the oldest they are longer and richer in emotions now the saga put more on the Multi player part

the best campaign in my opinion was ghosts. the part with the dog broke my heart