I noticed there are a lot of separated DOW2 communities. So, this was my attempt to bridge them together in one place, so people can connect with each other.

Feel free to let me know if there are others that would like to join. These are just the ones I know to my knowledge.

>> Main Dedicated DoW II Servers:
Dawn of War II
https://discord.gg/nqJ5JP2UAe
- General discord server for DOW2 series only.

The Last Stand
https://discord.gg/CyqExT6hxR
- Discord server to find players to play Last Stand on Retribution

>> Active Mod Groups (PVP / PVE):
Elite Mod:
https://dawnofwar.info
https://discord.com/invite/elitemod
https://www.moddb.com/mods/dawn-of-war-2-retribution-elite-mod
- PVP balance mod with new units, active multiplayer community. Largest active mod community, with monthly tournaments and matches.

DoW2 Eternal Mod by iToaster
https://discord.gg/d6NagMpBFg
https://www.moddb.com/mods/dawn-of-war-2-eternal
- PVP / PVE mod that attempts to bring back base building, and new units like the old DOW1 series.
Toaster Race (creator's personal discord server): https://discord.gg/WTcAhVEcq4

DoW2 Codex Edition Unofficial by Kharos
https://discord.gg/uSJEhGGdqC
https://www.moddb.com/mods/unofficial-codex-edition
- PVE / PVE mod that continues the old Codex Edition, with some new juicy additions!

Vengeance of the Blood Ravens / Astartes Mod by Imperator
https://discord.gg/Gjmtgp7hBX
https://www.moddb.com/mods/vengeance-of-the-blood-ravens
- PVP mod with loads of new units, including supertanks and heresy era units.

>>Last Stand Mod Servers
The Final Stand
https://discord.gg/QzH3rZmKgH
https://www.moddb.com/mods/final-stand-mod-for-dow2-retribution
- A new last stand mod, attempting to properly add new heroes and new maps and overhaul of the balance.

Uncharted Expanses (UE):
https://discord.gg/tbmRzmP3TV
(Under Space Marine Augmented server)
https://www.moddb.com/mods/dawn-of-war-ii-uncharted-expanses
- Yet another new last stand mod, adds new heroes and new maps and overhaul of the balance.

Last Stand : Forgotten Emerald Mod
https://discord.gg/B5CXjpM
https://www.moddb.com/mods/last-stand-forgotten-emerald
- The original and first last stand mod, one new map and different new heroes and configs

The Last Stand Project Mod
https://discord.gg/a7FENdtZB6
https://www.moddb.com/mods/the-last-stand-project-mod
- Another last stand mod, made by Russian modders.

Last Stand : Universal Edition => Not sure if they're still around, was a while back.
https://discord.gg/g3y3Kpte (link expired).. can't find a new one.
- Yet another last stand mod, made by Russian modders. There's also an experimental campaign mod in the works.

>> Community Servers:
DOW2 Russian Server (Retribution & Elite) / Moustache of Victory
https://discord.gg/TamK3HD6Mf
- This is where most Russian players are at! (Вот где большинство российских игроков!)

DOW2 Korean Server (Retribution & Elite)
https://discord.gg/GAWTK5BkV6
- This is where some Koreans players are at! (이것은 일부 플레이어가 있는 곳입니다!)

>> DOW II Modding Servers
DOWII - Modding Community
https://discord.gg/fVTNfRyWKR
- Main DOW2 modding server.

⦁ Nootspheric Network
https://discord.gg/UeWR9vh8xY
- The original DOW2 modding server secret hideaway run by Magos Noot.

ModDb: https://www.moddb.com/games/dawn-of-war-ii-retribution
Nexus: https://www.nexusmods.com/dawnofwar2retribution/mods/

Dawn of War
https://discord.gg/XcTydZUTPq
- General discord server linking DOW1, 2 and 3.

Extra: Waagh Mod by Dr. Tobias,
https://www.moddb.com/games/dawn-of-war-ii-retribution/addons/dawn-of-war-2-retribution-waaagh-mod-v1-9-52
- offshoot of Elite (somewhat in active development anymore) though the creator is still around.
- Based on V2.9.8.4 of Elite.
- Adds some tweaks and new stuff like vehicles in army painter, new weapons (I'm not gonna spoil it) to the gameplay!

Official Relic Entertainment Discord Server:
https://discord.gg/relicentertainment

RelicNews
https://discord.gg/NqbzqqxzcV
- Mostly CoH stuff, also sometimes DOW2 stuff.