Well, I've built an artillery park! I started working on the 105cm howitzers and got a little carried away. I got out my Nebelwerfers I did for Cassino and have rebased them to match. Then I magnetized the 15cm rockets and dug out six 21cm guns out of my backlog of German blisters. I magnetized those as well so I can do a simple swap-out for the different weapons, easy peasy!
Nebelwerfer Battery (15cm and 21cm options)
The army so far (ignore the crappy table for now!).