@Constantinople:
Krieghund you earlier said:
Attacking and defending subs may always submerge before any dice are rolled in a combat round, unless there is an opposing destroyer.
But the rules contradict that. It says specifically on p 30 that:
“If both players have submarines, all the submarines get to fire a surprise strike before taking any casualties.”
I interpret that to mean that all the subs involved can not submerge but have to engage in the Surprise Strike.
The rules also say that “Anytime a sub would otherwise roll the die to attack or defend, it can submerge instead.” The sentence you quote simply means that defending subs roll for Surprise Strike before casualties from the attacker’s Surprise Strike are removed, so they still fire even if they are casualties.
@Constantinople:
Furthermore, if Surprise Strike is defined as an attack, as it is on p30, then how can defending subs engage in a Surprise Strike?
If a cruiser moves into a seazone where there is a sub, how can the sub conduct a Surprise Strike, an attack, on the Cruiser when it is the defending sub?
“Attack” was a poor choice of words. “Fire” would have been better. The rules clearly indicate that defending subs also get a Surprise Strike in that same paragraph.
@Constantinople:
Furthermore, if a legitimately attacking sub uses Surprise Strike against a cruiser it encounters, and chooses not to submerge, it can use it again against the cruiser?
Yes. Surprise Strikes happen in every combat round.
@Constantinople:
Finally, if there is a DD in the sea zone, the Sub has to stay all combat rounds and can not submerge, and has no Surprise Strike ability; whether it is defending or attacking, that’s the bottom line?
Correct. However, if the destroyer is sunk, the sub gains the ability to Surprise Strike or Submerge in the following combat round.