Each represented the number of crew members that'd be sacrificed with me should that number be chosen!
Would you tell me the structure of the sentence?
Each (Subject) represented (Transitive verb) the number of crew members that'd be sacrificed with me (Object) should that number be chosen! (????)
Should can be used to denote an unlikely eventuality in an if-clause: If it should rain, we won't go on a picnic. If he should call, tell him I'll be back in an hour. It is possible to omit if and change the word order: Should it rain, we won't go on a picnic.
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Should can be used to denote an unlikely eventuality in an if-clause:
If it should rain, we won't go on a picnic.
If he should call, tell him I'll be back in an hour.
It is possible to omit if and change the word order:
Should it rain, we won't go on a picnic.
Should he call, tell him I'll be back in an hour.
This
Each represented the number of crew members that'd be sacrificed with me should that number be chosen!
You are partly right: “with me” is not Object but a preposition phrase in Adjunct function. The sentence is a conditional construction where "should that number be chosen" is a conditional clause in which "should" has a conditional meaning similar to