Unlike Hawk Eye, the intel gathering is instantaneous, although you will still need to drop Sneak and Invisible.
Both ??? are in places where you should be able to avoid aggro while checking them.
After checking the first ??? you will also get the message "The gathered information is insufficient. More surveillance is required."
When you click the second ??? you will get the message "Adequate Intel has been acquired" and you will obtain exp.
The war planning division is in need of accurate details of beastmen camps in order to devise the next large offensive. Infiltrate Beadeaux with the troops of the 7th Cohors and obtain intel regarding both defensive capabilities and weapon stores.