Emplaced weapons

[val]

Exactly what the title says.

Honestly, do you expect army bases to be completely defenseless? Or the National Guard in Washington DC not digging in when they hear aliens are coming?

In other words, there ought to be defensive works.
A couple examples:

Foxhole/Trench:Easily codable.  It's a hole in the ground, for god's sake.

Sandbags: Not so easily codable.  It ought to act as an obstacle to fire if someone's crouching.  Also should  add a TU penalty to jump over it.

Emplaced weapons: Just that.  A stationary object that can combine with a soldier to make a soldier/weapon with zero mobility.

[Precisionist]

I think an auto-turret would be cool.  Something that takes up the whole backback space, and takes a full turn of TUs to set up, but then fires at short range at any aliens near by.  Can also be destroyed, but it would be useful to put behind troops or around corners.

[val]

Not exactly what I was thinking of.  I was thinking of, say, a machine gun nest.