The Leo 2 is from Aoshima and the Marders are from Arii. The Marders are the early version with the remore controlled MG turret on the rear deck. I converted my ones to a later model by removing this but it can be put back if needed.
The scale of these models is 1/48 and the BTR is also this scale, it is longer than a Marder but much slimmer. I think this scale is a pretty good match for these infantry but I am not too fussy.
Bolt Action Order dice are used for determining activation and the 6 basic orders are still used with slight differences. Units can also attempt specific Commands like "Shoot and Scoot" or "Blitz Move" which are similar to Team Yankee movement orders.
Units have a Skill and Morale die value, when required to check this they roll their die and need a 4+ to succeed. So a West German Marder would roll 1D8 for a Skill check and the * indicates they can reroll a failed result.
Here is a quick look at some of my WIP data cards for several vehicles to highlight some of my rules.
The score needed to hit a target is range based. So at range <12" you hit on 3+, for every 12" thereafter the score required to hit is increased by 1 so at a range of 60" you would need a 7 to hit.
Units have a Shoot die that is used to hit and different units have different polyhedral dice to represent targeting equipment and optics. If a die has an * next to it it can reroll. So a Leo 2 is rolling a D12* for their 120mm cannon and can reroll their to hit die.
When hit the attack then rolls their Power dice to beat the target's Defense (Armor) value. If this happens they then roll on a Critical table using their Critical dice to determine the outcome.
I also have some US and Soviet forces ready and next will be the BAOR once I find suitable 28mm British infantry models!