Has group 3 of this card been purchased pre-game or is it available for play in June III (or not)?
If it is purchased in June III, when is card C available - October I or October III? Always start at beginning of month as there are no tracking markers for weeks?
There are none for months either - should there be? I see there is at least one other card with monthly recycling.
Why is the delay +4M rather than +2S?
Assuming the card hasn't been pre-purchased, it might sometimes make sense to defer using it until July I. You could spend 3 EP (plus FP) for rebuilding six mech corps (should there be sufficient casualties among them). This six from PP for the later inf corps in exchange for delayed tank units later. A terrible decision for the campaign but seems a no brainer for Barbarossa scenario.