This is a Bunker test that I made in UE.

Bunker geometry
The bunker geometry have around 15.000 triangles and for a correct visualization all vertex triangles normals are averaged.
The concrete damage was modelled and I added some rust pieces of the metal structure of the concrete slab to make more realistic look.

Textures and PBR Materials

-Concrete_A (Formwork concrete) texture.
-Concrete_B (Generic concrete) texture.
-Concrete_C (Damage Concrete) texture.
-Rust texture.

-Ground Grass texture.
-Ground Soil texture.
-Rocks texture.
-Ground Mask texture.