Let's review our situation:
-We're in the Legion, and have spent an entire month on basic training. Now things are getting violent.
-We spilled some info the general thinks we shouldn't know, and he doesn't trust us because he doesn't know how much more we know.
-A town was just sacked.
Having made ourselves suddenly very, very interesting to the General (earning his suspicion), and with an entire settlement wiped out save for three survivors, does anyone really think he'll stick us on guard duty for a year? No. He wouldn't trust us to patrol around a road where we could slip into the backcountry, and he wouldn't want to lose our information. He'll probably want to keep us near him, so he can keep an eye on us, and he'll probably only send us out with a squad to investigate/engage 6th House sitings or perform reconnaissance.
We must impress upon him that war is imminent, and we must convince him that our information is correct. The more correct information we give him, and the more willing we seem to do our duty, the more he'll trust us. We should probably only give him info we know will be correct. This includes descriptions, locations of Sixth House bases, and the general goals of the enemy. We barely had time to say anything as we were about to leave, but once we get back we can tell him everything we need to. The empire is a very pragmatic military. If he thinks our talents are better used as an informant than a grunt, than an informant we'll be. We just need to gain his trust.
FOR THE IMMEDIATE FUTURE:
-Get/help squad to investigate scene for signs of battle. Spell residue, loose arrows, impact marks, etc. We want to know if these creatures fought differently than expected.
-Take Survivors back to Gnisis for safeguarding/questioning
-Make sure Strillian or the Champion don't leave us behind to watch the place.
-Maybe collect loose change first? I'm not sure if it's a good idea...