Now that Advance Wars 1+2: Reboot Camphas finally released, fans are diving into Nintendo’s latest remake and rediscovering what made the series such a “must play” in the early 2000’s. One of the best mechanics that made Advance Wars stand out from its competition was the CO system.

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COs, or Commanding Officers, are a big part of the fun in Advance Wars.Your choice in CO will fundamentally change how your entire army performs and each one brings powerful CO abilities that can change the ebb and flow of combat.With 19 COs to choose from, there are plenty of options to find a CO that fits how you want to navigate the battlefield.To help you keep track of which COs you still need to unlock, here’s a quick guide to help you find out where to unlock each CO.

How To Unlock All COs

If you’re a veteran of the series, you’re able to breathe a sigh of relief.COs are no longer tied to in-game performance, mission difficulty, or choosing specific COs against others.Instead, additional COs are unlocked by defeating them in specific campaign missions. Once they’ve been defeated, you can then purchase them from Hachi’s store. Here’s a quick run down of how to unlock COs in each game.

Advance Wars 1

How To Unlock

Unlocked by default

Finish Mission 10: History Lesson

Finish Mission 14: Kanbei’s Error?

Finish Mission 17: Sonja’s Goal!

Finish Mission 20: Wing’s of Victory!

Finish Mission 21: Battle Mystery!

Clone Andy

Finish Mission 24: Final Battle!

Complete all missions in the Advance Wars 1 Campaign

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Advance Wars 2

The unlock requirements in Advance Wars 2 is similar to AW1 with a few key differences. Some COs are unlocked by just doing 4 missions in their home nation. The Black Hole COs are unlocked after doing a factory mission, which there’s only one of in each nation.

Finish Mission 8: Liberation

Complete 4 missions in the Blue Moon Nation

Finish Mission 16: Factory Blues

Complete 4 missions in the Yellow Comet nation.

Finish Mission 24: Hunt’s End

Complete 4 Missions in the Green Earth Nation

Finish Mission 32: Great Sea Battle

Finish Mission 34: Final Front

Complete all missions in the Advance Wars 2 campaign.

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How To Play Each CO

Once you’ve unlocked a CO, head over to Hachi’s Store and purchase them with the Advance Wars coins you earned from completing missions. After purchasing them, your new CO will be available to use in online multiplayer, local versus, and the war room.

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Andy being confused about airports in Advance Wars Campaign

Sami being selected as a CO in Advance Wars