Galaxy Angel Rune

Join Milfeulle, Ranpha, Mint, Forte and Vanilla in the Angel Brigade!

You can actually watch Galaxy Angel in any order. But here's a guide if you want to watch it by release order. Those with asterisks (*) are the parent stories.

Basically, Galaxy Angel > Galaxy Angel Z > Galaxy Angel 3 > Galaxy Angel 4.

Galaxy Angel Watch Order:
*1. Galaxy Angel (Apr 8, 2001 to Sep 30, 2001) | TV | 24 episodes × 13 min. per ep. - Side Story / Prequel / Alternative Version
2. Galaxy Angel Specials (Jan 25, 2002) | Special | 2 episodes × 13 min. per ep. - Side Story
*3. Galaxy Angel Z (Feb 3, 2002 to Mar 31, 2002) | TV | 9 episodes × 24 min. per ep. - Sequel / Parent Story / Prequel
4. Galaxy Angel Music Collection: Shouen to Shien no Cassoulet (Apr 25, 2002) | OVA | 1 episode × 13 min. - Side Story
*5. Galaxy Angel 3 (Oct 6, 2002 to Mar 31, 2003) | TV | 26 episodes × 24 min. per ep. - Sequel / Parent Story / Prequel
6. Galaxy Angel 3 Specials (Nov 28, 2003) | Special | 2 episodes × 13 min. per ep. - Side Story
7. Galaxy Angel S (Apr 23, 2004) | OVA | 1 episode × 24 min. - Side Story
*8. Galaxy Angel 4 (Jul 7, 2004 to Sep 29, 2004) | TV | 13 episodes × 24 min. per ep. - Sequel
9. Galaxy Angel Rune (Oct 2, 2006 to Dec 25, 2006) | TV | 13 episodes ×24 min. per ep. - Spin-off

Check this stack for the manga reading order: https://myanimelist.net/stacks/22190

Episodes 1-26 (Galaxy Angel [Season 1, episodes 1-24] + Galaxy Angel Specials [VHS/DVD only episodes 21 and 26]) were called Galaxy Angel A (ギャラクシーエンジェルＡ).
Episodes 27-52 (Galaxy Angel 3) were called Galaxy Angel AA (ギャラクシーエンジェルＡＡ).
(Source: ANN)

"Galaxy Angel A (Galaxy Angel 3) and AA (Galaxy Angel 3 Specials) are both considered to be Galaxy Angel series three. Aside from their openings and endings, there is no difference between them and their episode numbers do not reset after the change."

"Series AA is still part of Galaxy Angel series three. The only difference is the OP/ED."

"Series S was a special that aired between AA and X."
(Source: List of Galaxy Angel episodes: https://en.wikipedia.org/wiki/List_of_Galaxy_Angel_episodes)

The order of the titles can be confusing so here are some resources:
Wiki: https://en.wikipedia.org/wiki/Galaxy_Angel
ANN: https://www.animenewsnetwork.com/encyclopedia/anime.php?id=837
AniDB: https://anidb.net/anime/108

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Genres: Comedy, Sci-Fi

Tags: Bishoujo, Cadet, Girls, Space, CGDCT, DGDDT (Dumb Girls Doing Dumb Things), Moe, Franchise, Bandai Visual, Broccoli, Madhouse

Club: Galaxy Angel FANS CLUB https://myanimelist.net/clubs.php?cid=343 (Inactive)

Collection of series that parody the mecha genre