7. Repairs- repair the defence value of a location. You win battle either by attacking the castle or location till the value gets to 0 or you defeat all enemy troops. If your castle has low castle defence value then obviously it's easier for enemy to defeat you without killing you units.
8. Alliance- form an alliance with a nation. The alliance may not always be reliable, the other side "may" choose to break the alliance and attack you < this is what the tutorial so I'm not sure how likely it will be. Maximum number of alliances you can have is up to 3.
9. Sabotage- Reduce the target location defence value when succeed, choosing a unit with high stat in intelligence will increase the results(?) or chance(?). I can't remember which one or maybe affects both.
10. Not exactly how to translate this- Reduce the amount of enemy troops in the selected location when succeed. Same as above, higher intelligence = better?
11. Captured units- You can deploy units that you defeated in the location that you choose after you won an area. I believe the tutorial said the higher loyalty on the character, the harder it is for you to recruit them.
12. Event- well, gives you event with the selected character. The 1st event you choose every turn cost 0 cp, but if you try to see another event on the same turn, it will cost 5cp.
13. Information-
1: Your units information
2: Lets you see any territories and who is currently conquering them in the selected land. The land is separated by the black lines on the map and each land holds around 8-10 territories. This will cost 1CP per land.
3: Lets you see the information about other forces(number of troops, territories owned, number of generals)
4: Information about the famous generals in sengoku and sangoku. Mainly background information about the characters, nothing to do with gameplay.
14. Options settings: lets you save, load etc
15. Quick save
16. Quick load
Last option is end turn which should be obvious enough lol.