As I found out last year, WW1 doesn't press anyone's button, I think WW1 is overlooked in so many ways, but, trenches, tanks, aircraft, troops, its all good for making a darn good diorama and that's what you have yourself there.
Have you picked a year ? Winter, Spring, Summer or that other quarter of the year, once you have set yourself up, the option for weathering is endless, rip open a sandbag, or bullet holes, splintered wood, 120 is a big old size, mine was 1-72. Look forward to seeing more.