Use a hyphen before the command:
-array (instead of just array)
Use the MVSETUP command and its options “Align viewports”, “Rotate view”.
As an alternative, you can use the DVIEW command with the Twist option. Or you can rotate an UCS about the Z axis and - if you don't have UCSFOLLOW set to 1 - set the _Plan view.
You can also use the Express Tool ALIGNSPACE.
North will be at an angle, but text, dimensions, and ortho snapped lines will be up/down, left/right. World coordinates will remain unchanged, but view coordinates will be moved and rotated.
View toolbar → Named Views → Orthographic and Isometric Views → (uncheck) Restore orthographic UCS with View