I don't know how many people have said this stuff already, but I have several ideas
1. Pink Floyd: The Wall Units. The Hammer Army (from the movie)
2. Dead bodies (with missing limbs and severed heads)
3. Aircraft Carrier
(joking)
4. World Trade Center 2* (tried the first one, this one can have AA, stingers, rockets, the works.)
5. Other Famous landmarks (like The Arc d' Triumph (watching Germans walk under it effortlessly)
6. Civilian Radio station
7. A bed (can use the one ambulance animation for sleep)
8. Shoulder Camera (for the Kill Geraldo mission)
9. Missile Silo Complex (shoot scuds)
10. Stage with Soviet Banner and one with US Banner like in Patton
11. The Green Goblin's craft.
That's it. By the way, I am American