How to beat campaign mission 1-40 Battle of Moscow?

This is a particularly difficult campaign mission and yo may need to come back a few times with upgraded troops before you can complete it.

You have to be efficient and not lose too many units before you get to the third wave, then let them come to you at the town hall.

If you have troops, activate their bunker and fight them at the town hall, targeting their most dangerous units first, or the closest ones to you.

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