I like this. I personally think the renders are blended well, especially the watch tower. I also really like the text, I'd appreciate it if you could tell me the name of the font used for the word 'Battlefield'. I think the orange brushing transists to green too suddenly. Try brushing inbetween those colours in a greeny-orangey colour to make the change in colour more smooth.
Overall I think this sig is pretty damn nice, good job.