Hi Chris,
The intended design of the Self-propelled Artillery unit was to support “fast moving” units that operate alongside Tank & Panzer units - such as Mechanized Infantry etc.
The background for the limitations in production numbers and Nations that can produce SPA is partly based on:
- Play test results (game balance)
- Historical production numbers of SPA compared to the production number of Tank units
- Historical use of SPA
- Ease of Game Play
At this point our play test results - and their use during recent games - show that mostly Germany and the Soviet Union are using the SPA units.
The Soviets most often combine their SPA units with their Soviet Guard Infantry units - either as part of Soviet Army Corps - or as independent units.
Prior to the introduction of SPA units Germany is already familiar with the use of SPA since the German Waffen-SS units include SPA units.