Yes, you can play DMZ solo in Call of Duty: Modern Warfare 4. The setting is easy to miss, so you may initially enter a match with randomly assigned teammates.

This guide explains where to disable squad fill, what solo play offers and when bringing a full squad may still be the better option.
How to play DMZ solo

- At your forward-operating base, choose a deployment type: a story mission, a dynamic operation or free roam.
- Select your infil method.
- On the following preparation screen, check your operator, inventory and whether you want to equip a free loadout.
- Look in the bottom-left corner for the “squad fill” toggle.
- Turn squad fill off before deploying.

With squad fill disabled, DMZ sends you into the operation alone rather than adding random players to your team. If you usually prefer solo games, this option lets you keep control of the entire deployment.
Why play DMZ solo?
Solo deployment comes with several practical advantages. Any loot you discover is yours to keep, and operating alone can make it easier to remain stealthy while avoiding both human opponents and PvE soldiers.
You also have complete freedom over your objectives. You can select whichever story missions and dynamic operations suit your plan, without having to follow another player’s priorities.
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When should you use squad fill?

Solo play is not always the easiest route. Some DMZ missions and bosses are particularly difficult, making a squad useful when you need extra firepower, support or another player to share the pressure.
That said, sufficiently strong equipment and the right level of skill can make even these demanding encounters possible alone. The choice comes down to your gear, confidence and whether you value independence or teamwork for the operation ahead.

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