I'll guess trim decals and maybe a blend material https://docs.cryengine.com/display/SDKDOC2/Using+Decals+for+Destroyed+Structureshttps://www.artstation.com/artwork/l3wwa
Thanks for the help. So it'd be just using decals and maybe a 'damage' material vertex blended? In that case, how is the silhouette of the damaged parts fitting so well? Is this achieved by just moving vertices around to get a damaged look, then applying the decal on top of those faces?