Legend of the Galactic Heroes (FUJISAKI Ryu) - Vol. 1 Ch. 3 - The Officer Academy Years of Reinhard von Müsel

[MangaDex]

 

[Remy88Lebeau]

If this was the first time they went to space then that would mean that planet Odin is where they were BOTH born and where Annerose is\was.

Also if it has been 1year 8months since they joined and Annerose curried Majesty's favor then she may have already have 1 child and preggers with another at the moment.