Have "Operation Victory Arrow" or "Brave Witches" been released officially outside Japan?
You'll find the info for bd-dvd release for brave witches here.

Meanwhile , the operation victory arrow dvd's are only in japanese , although they may be in subbed format so you should check them out , there has been no official info on the dubbed release of dvd's.

Although crunchyroll seems to be streaming these series so you can check that out as well.