I'm playing "First Reconnaissance" solo. The solo rules for that scenario (page 15) say to "Use ... special rules for Tactic selection from the Solo Conquest mission (page 17)". Page 17 says:
* When taking Tactics, you always choose first. The Dummy player then takes one random card from those remaining.
* At the end of each Day or Night, remove both used Tactic cards from the game. That means, each Tactic card is picked exactly once during the game.
I'm unclear whether to apply both these rules or just the first:
The first rule is clearly about Tactic selection, so it definitely applies.
The second rule is not about selecting Tactics, it's about what to do with them at the end of the round. Also, the second sentence is clearly untrue in the case of First Reconnaissance, which only lasts at most four rounds, which creates even more doubt about whether it's meant to apply.