Ryan will definitely explain the fact that their jackets are Survey Corps/Scouting Legion jackets. And show everyone Bertholdt's 3DMG.

As for the facts he knows;

• he remembers they were soldiers.


• he remembers that he and Bertholdt joined the military because their hometown was destroyed by titans (he doesn't know this isn't true)


• Alan was tied up for some reason, but he broke out of his papoose. Jean, Bertholdt, Ymir, Connie and Armin were present for this memory, but he only really remembers Bertholdt.


• There were good titans and there were bad titans. The good ones could shift into people and don't eat people, whereas the bad ones do. This hasn't been disproven. Yet.

Lastly, Ryan is sharing that whole quote thing because he remembers feeling very guilty about those words-- so yes.