OK! there are a few for this place but I only know 1. once your in
the trench looking thingy after Shima field you will pop out of a
hole and there will by a guy right there to your left shoot him then
you go strait. If you crouch you can get out and go to the house.
But before you do that turn to your right there will be a big box.
shoot it then there will be a medium box, shoot it then guess what
there is another small box. shoot it and a statue of a golden Buda
will appear pick it up and then you will get a bonus objective.