Midgard uses a standard base frontage of 120mm for 28mm miniatures, although you can play with any size whatsoever as long as the frontages are roughly similar across both armies. Scrivs, Tom and I have painted rather a lot of stuff for this period over the years, so we decided to go for units on a 160mm frontage for the Partizan game.
My whole collection was orginally used for Warhammer Ancient Battles, with a variety of single and multibased figures. With all the bases being magnetised, it hasn’t been too much trouble to create suitable movement trays for them. The ever-wonderful Warbases provided me with some round-cornered 2mm MDF bases, which I have then tarted up with a layer of magnetic sheet before adding rocks (from tree bark chippings) and my usual basing mix and tufts.
The self-adhesive ferro steel (visible as a green layer in the photos) was acquired from Magnetic Displays (stalwarts at Partizan and Hammerhead shows and a super quick mail order service to boot, as I have discovered since March 2020). I’ve found that as long as you don’t put too much paint over it, and avoid getting flock or sand on it, magnetically-based figures stick pretty well and will stay in place for gaming and transport.
I could have gone down the route of permanently basing all the minis on a single base, which I know looks amazing, but wanted to maintain the versatility to be able to use the figures singly as well. While the models’ bases can be clearly seen, I think that this method is a good compromise between the mini-diorama effect and playability.