A Christmas Katyuska - part 1

 After last summer’s Ebro game my Nationalist AA gunners complained of a lack of large targets. As I have been prevailed upon to run a similar game at this year’s COW action was clearly required!  A few minutes on eBay later and I was the proud owner of this ancient kit of Comrade Tupolev’s finest.
Once I make a high enough morale roll I’ll open the box and begin....