Go give it a go!
Starting now, free-to-play Call of Duty: Warzone players can experience the latest additions to Call of Duty: Modern Warfare Multiplayer – free. For one weekend only, the entire online community can face off in an all-new Multiplayer Moshpit. Play 6v6 Multiplayer modes on five popular maps, including three NEW Season Three maps, until 10AM PT April 27.
More details about the free maps and modes for Warzone players this weekend are available here: https://blog.activision.com/call-of-duty/2020-04/Warzone-Multiplayer-Free-Access-Weekend-is-Back-for-Season-Three