I've been rummaging in amongst a bunch of stuff that I 3d printed ages ago and never got around to painting, and one of them is this 1:100 (15mm) WWII German Nashorn SPAT, also called Hornisse. It was a very potent anti-tank weapon, with the long L71 88mm, but it had a real glass jaw, with very light armour. It was intended for long-range sniping rather than mixing it up with other armoured vehicles.
I've painted this one in a scheme suitable for Italy.
This one is a 1:100 (15mm) model of the German 150mm SPG
Hummel (Bumblebee), a 15cm gun-howitzer mounted on a PzIV chassis.
I've painted it for North Africa, but it would also do for Italy.
(Note: The rivet-counters have informed me that it never actually saw service in Tunisia, so I guess Italy it will have to be.)
The chassis and superstructure were printed on my Mars Pro in resin, while the running gear components were printed on my Ender 3 FDM machine.
Nashorn #02
This is another model I printed quite a while ago on my Ender 3. Compared with similar prints from my Mars Pro, the FDM layer lines stand out like dogs' balls.
I've painted this one in a three-colour scheme suitable for Kursk or Normandy or Bagration or later.
I like to include some crew figures in my little 15mm model tanks, both to give a sense of scale, and also so that it doesn't look like a bunch of autonomous robot machines tootling about on the wargames table.
I think the Nashorn actually had a crew of about six, but any more than these two in the fighting compartment would be unfeasibly crowded, so these guys are symbolic of the crew rather than actually representative of it as a whole.
I kitbashed these figures from a bunch of others. The main bodies came from 3dBreed, but things like hats and helmets and shells and so forth I made myself and added to the cut-up original figures. They were printed on my Mars Pro resin printer.