Apologies - I had to adjust a setting.
you need to Set horizontalmonitorcount to number of monitors
C:\users\<USER>\Documents\My Games\Dawn of War II - Retribution\Settings
configuration.lua
setting = "horizontalmonitorcount",
value = 3
Fixed the zoomed in menu at the start right away.
-edit-
Bulletstorm - Works but has FOV issues.
Solution is in the bottom post of the first page.