Jan van der Laan wrote:
To 1) No, all defending units defend on double defense (two hits for a one step reduction) without regard to the type of unit.
To 2) No, SS armored units still defend on double defense (see above) but they fire on quadruple fire meaning hits on 3's, 4's 5's and 6's when firing.
1) Is correct. The defender might even have Triple Defense (only one point of damage per three hits taken) if the attacker is unsupported.
2) The question still remains whether armour and mech units raise their DF to TF (and SS mech and armour to QF?! - sounds unlikely) in major cities.
1.41 says 'all units defending Major Cities have Double Defense (7.3) and DF firepower or better', and 7.32 states that 'All units in Major Cities fire at least DF on Defensive Fire.
But does this mean that all units increase their firepower level by one (SF=DF, DF=TF) or that only units with SF get DF (and Armour and mech units remain at DF)?