Stompie said:Night attack is a no-go. Our Protagonists don't have access to NVG's. Only flashlights. What better way to give you're position away?
Besides, you wouldn't want to get caught in a firefight with nazi-muffins that could outflank you, almost invisibly.
Best bet is surprise
Stompie,
I was making the reasonable assumption that the AF would have NVGs along. There's no reason why they wouldn't have them, they're standard issue. The Nazi goons won't be able to realistically pull off a flanking maneouver in the dark, NVGs or no. This is something that requires military training and exercises. Plus, as suggested there would be "flank security"... the militia aren't the only threat out there! The flanks, or sides and rear of any force need to be screened or protected.
The surface element would not have flashlights. They don't need them, and they won't work at anything other than short range anyways. All they need to do is lay down suppressing fire, which is not really aimed. A little more risky would be to have the helo above directing the ground elements, although there is the risk of SAMs or triple-A. (However, this is what your snipers are for, to suppress these kinds of threats.)
Remember, the main element uses the tunnels. Their task would be the same day or night, but it would be easier at night when less people are up and around. A daytime raid would be a lot easier to set up, but result in more casualties.
Another thought would be to set a fire to both distract the militiamen, provide smoke for cover and burn off the grass covert that makes surveillance difficult.