Basically any mission should work with ACE, though if there are triggers involved with vehicle destruction,

these might not work well unless adjusted for ACE, or by temporary disabling the Vehicle Damage System.

Missions Bundled with ACE

Multiplayer missions

You can find these in the @ACEX\addons\acex_missions.pbo file and @ACEX_USNavy\addons\acex_usnavy_missions.pbo file. They will appear in the MP Create Game screen alongside stock MP missions.

You can also play these as single player, by opening an MP Host.

Tutorial and Demo missions

Please see Demo and Tutorial Missions.

Third-party Missions

Here you can find a list of missions made by others that use ACE. The ACE team cannot provide support on these missions, you'll have to contact the author for that. 

• Devastation-AAS v2
  The Devastation/AAS v2 is a competitive team versus team MP game mode suitable for public servers. It uses the basis of Sector Control with the added extensions of grouped zones, linked sectors and sequenced capture order to provide a battlefront concept which still works well for fewer players (20-50). It does not work well for too few players (eg: 6v6).
• PvP Scene AAS
  The PvP Scene AAS is a competitive team versus team MP game mode. 
• Six Battle Center
  The Six Battle Center mission is a Coop mission with adverserial possibilities, fully dynamic, mission-master setup
• Warfare BE by Benny - ACE Version By JoeHunk
• Six Updater Missions repository: sixupdater://rsync.dev-heaven.net:82/m/config.yml
• Animal Mother's Missions
• You can find missions also at several community fan sites, for example:
  • http://www.armaholic.com
  • http://www.armedassault.info/

 Have a look at the Missions Overview over at Six Updater.