Features 88 guns, 30 flamers, and 8 artillery running off 40 solar panels with a battery indicator.
The second rail track is a bypass if you want to hook up to an existing rail network.
You can substitute artillery wagons for the cargo if you want greater capacity.
Also be sure to reverse the inserters on the artillery turrets and chests once loaded.
Check this link to see it in action https://youtu.be/0dCq-a-sfKA