Seen here is an unlit and lit scratch-built Imperial Bastion. There are 10 Valhallan IG in there for scale. I think the back parapet will either be connected to an anti-air tower or maybe a Skyshield. The lights are railroad lights powered by a train power supply. I have two more lights to wire up, a blinking red light at the door and a steady light in the rear.
More to come as it progresses.