Downloaded patch at brother's at home I can't play offline. I've heard that you could?

World War II Xbox One

I have downloaded the patch for call of duty WW2 at my brother's house. I don't have internet at home and now that I've got home and hooked up it says I need to be connected to Xbox live to play. I've saw posts here that say I can play offline. Can anybody tell me how to do this? I'm so sick at having bought it and now not being able to play!

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Registered: ‎30-03-2018