Call of Duty: WWII’s main single‑player campaign has 12 story missions (chapters), including the epilogue.

Here’s the list of all missions:

  • D‑Day
  • Operation Cobra
  • Stronghold
  • S.O.E.
  • Liberation
  • Collateral Damage
  • Death Factory
  • Hill 493
  • Battle of the Bulge
  • Ambush
  • The Rhine
  • Epilogue

There are no side missions in the campaign; it’s a straight 12‑chapter story.

Info note: Some forum posts casually say “11 missions” because they don’t count the epilogue, but official-style mission lists and campaign chapter counts use 12.

TL;DR: For “cod ww2 how many missions” in campaign mode, the answer is 12 missions (no side missions).

Information gathered from public forums or data available on the internet and portrayed here.