All Rainbow Six Siege Operations in Order: Complete Timeline

What is the current Rainbow Six Siege operation?

System Override remastered Dokkaebi, added the XK23 assault rifle, introduced Calypso Casino, launched Ranked 3.0, and enabled native mouse-and-keyboard support on consoles with PC matchmaking. The official Year 11 roadmap lists Y11S2.3 as the latest live update at this check.

Split Fire is officially announced, not live. Ubisoft says the season adds defender Noor, the Horus Lance shield-counter gadget, a targeted Villa update, a limited 3v3 Arcade mode, modernized versions of Stadium Alpha, Stadium Bravo, and House, and the midseason Legend Division. Plans can change before release, so scheduled items remain labeled as such.

All Rainbow Six Siege operations in order

This list counts major named seasons, not every midseason patch, event, or hotfix. Release dates are live-server dates. “Rework” means Ubisoft changed an existing map; a modernized map is listed separately because Siege X's visual and material updates do not always replace the competitive layout.

Counting note: Ubisoft's Year 11 roadmap also describes an unnamed Season 4. Because the operation name and launch date were not official at publication, it is not counted as operation 44.

Rainbow Six Siege operation history by year

Year 1: Siege establishes the original seasonal formula

• Black Ice added Buck, Frost, and Yacht.
• Dust Line brought Blackbeard, Valkyrie, and Border.
• Skull Rain introduced Capitão, Caveira, and Favela.
• Red Crow closed the year with Hibana, Echo, and Skyscraper.

Year 2: Operation Health interrupts the cadence

• Velvet Shell added Jackal, Mira, and Coastline.
• Health deliberately shipped no Operator or map, prioritizing technical work.
• Blood Orchid carried the delayed Ying, Lesion, and Ela alongside Theme Park.
• White Noise delivered Dokkaebi, Vigil, Zofia, and Tower.

Year 3: events, Pick & Ban, and the first full map rework

• Chimera paired Lion and Finka with the Outbreak event rather than a PvP map.
• Para Bellum added Maestro, Alibi, Villa, and Pick & Ban.
• Grim Sky introduced Maverick, Clash, and the rebuilt Hereford Base.
• Wind Bastion added Nomad, Kaid, and Fortress.

Year 4: new maps give way to reworks

• Burnt Horizon added Gridlock, Mozzie, Outback, and the Newcomer playlist.
• Phantom Sight paired Nøkk and Warden with a Kafe rework and Reverse Friendly Fire.
• Ember Rise introduced Amaru, Goyo, a Kanal rework, and Unranked.
• Shifting Tides added Kali, Wamai, a Theme Park rework, and limb penetration.

Year 5: the one-Operator cadence begins

• Void Edge was the final two-Operator release of the year, adding Iana and Oryx with an Oregon rework.
• Steel Wave added Ace, Melusi, and the House rework.
• Shadow Legacy introduced Zero, Chalet's rework, Ping 2.0, map bans, and shared reinforcements.
• Neon Dawn brought Aruni and a Skyscraper rework.

Year 6: systems share the spotlight

• Crimson Heist paired Flores with the Border rework, GONNE-6, and Match Replay beta.
• North Star added Thunderbird and reworked Favela.
• Crystal Guard introduced Osa, three smaller map updates, and the armor-to-health conversion.
• High Calibre added Thorn, reworked Outback, and rebuilt the HUD.

Year 7: new permanent systems reshape play

• Demon Veil delivered Azami, Emerald Plains, Attacker Repick, and Team Deathmatch.
• Vector Glare added Sens, Close Quarter, and the Shooting Range.
• Brutal Swarm brought Grim, Stadium Bravo, recoil changes, and Impact EMPs.
• Solar Raid introduced Solis, Nighthaven Labs, Ranked 2.0, cross-play, and cross-progression.

Year 8: onboarding and playlist revisions

• Commanding Force added Brava, Mousetrap, and Beginner Challenges.
• Dread Factor introduced Fenrir, the Consulate rework, and permanent Arcade.
• Heavy Mettle brought Ram, Quick Match 2.0, Standard, and Commendations.
• Deep Freeze delivered Tubarão, Lair, and the Marketplace beta.

Year 9: remasters become seasonal headline content

• Deadly Omen added Deimos and overhauled shields and attachments.
• New Blood converted Recruit into Striker and Sentry and launched the Marketplace.
• Twin Shells introduced Skopós and began Siege Cup's beta.
• Collision Point remastered Blackbeard and opened optional console-to-PC cross-play.

Year 10: Siege X changes the scale of a season

• Prep Phase added Rauora and activated Reputation impacts.
• Daybreak launched Siege X, Dual Front, advanced rappel, modernized maps, and a Clash remaster.
• High Stakes introduced Denari, the Glaive-12, and more modernized maps.
• Tenfold Pursuit remastered Thatcher and Fortress and introduced Testing Grounds.

Year 11: a faster update cadence

• Silent Hunt added Solid Snake, the TACIT .45, three modernized maps, and a 1v1 Arcade test.
• System Override remastered Dokkaebi and introduced Calypso Casino and Ranked 3.0.
• Split Fire is scheduled to add Noor, Legend Division, a 3v3 Arcade mode, and a Villa update.

For the current competitive value of individual Operators rather than their historical season, use the Rainbow Six Siege Operator tier list.

Which operations added Operators?

The early model normally shipped two Operators per season. Operation Health added none, then Blood Orchid and White Noise each carried three because Year 2's planned content shifted. From Shadow Legacy onward, one new Operator per season became common, with remasters increasingly taking that slot.

• No new playable Operator: Health.
• Remaster-led seasons: New Blood (Recruit into Striker and Sentry), Collision Point (Blackbeard), Daybreak (Clash), Tenfold Pursuit (Thatcher), and System Override (Dokkaebi).
• Current new-Operator seasons: Silent Hunt added Solid Snake; Split Fire is scheduled to add Noor.

When a remaster changes how an established character plays, the original release still belongs to the older operation. Remasters are not counted as a second Operator release.

New maps, reworks, and modernized maps are different

New maps add a playable location, such as Villa, Emerald Plains, Lair, Nighthaven Labs, or Calypso Casino. A rework changes an existing layout and can alter routes, sites, or competitive strategy. Modernized maps, introduced with Siege X, receive updated visuals, materials, lighting, and destructible ingredients without necessarily becoming a wholly new competitive layout.

The complete Rainbow Six Siege map guide is the better destination for current map availability and layout comparisons. The operation table records what each season shipped, not what remains in today's Ranked pool.

How Siege's seasonal model changed

1. Years 1–4: most seasons centered on two Operators and a new map or substantial rework.
2. Years 5–8: Ubisoft moved toward one Operator per season and invested more seasonal space in systems, onboarding, balance, and map reworks.
3. Years 9–10: Operator remasters could replace a brand-new character as the headline. Siege X then expanded the model with modernized maps, Dual Front, and large platform systems.
4. Year 11: each season is split into four updates, roughly one every three weeks. Those smaller updates are still part of one operation; they are not separate seasons.

That distinction is why Y11S2.1, Y11S2.2, and Y11S2.3 do not appear as separate rows. They are System Override patches.

Can you still play content from old operations?

Operators and many maps persist, but an operation is a historical season, not a selectable archive. Limited-time events can end, maps can leave playlists, systems can be replaced, and Operators can be reworked. Check today's map pools and patch notes before treating a season's original feature list as current.

If you're returning after a long break, the current Siege beginner guide and dependable Ranked Operator picks are more useful than trying to recreate an older season.

Rainbow Six Siege operations FAQ

How many Rainbow Six Siege operations are there?

There are 42 released operations as of August 29, 2026. Operation Split Fire is officially scheduled as the 43rd on September 1.

What was the first Siege operation?

Operation Black Ice was the first post-launch season. It released February 2, 2016 with Buck, Frost, and Yacht.

Which operation had no new Operators?

Operation Health shipped no new Operator or map. Ubisoft used Y2S2 to focus on technical improvements, deployment processes, and high-priority bugs.

Is Split Fire playable now?

No. Split Fire is officially announced for September 1, 2026. Until it launches, System Override remains the live operation.

Is every Y11 patch a new operation?

No. Year 11 uses four updates within each season. Midseason and balancing patches remain part of their parent operation.

Official sources and update log

Operation names, season labels, release months, Operator/map summaries, and Year 11 status were checked against Ubisoft's official Seasons archive and live roadmap. The current build was checked against Ubisoft's patch-notes hub. Exact older live-server days were cross-checked against archived update records where Ubisoft's modern archive displays only a month.

• August 29, 2026: Built the complete 43-entry timeline; identified System Override as live; added officially scheduled Split Fire; excluded unnamed Y11S4.
• Next review trigger: Split Fire launch or any Ubisoft schedule change before September 1.

The operation timeline in one sentence

Siege evolved from the two-Operator-and-map rhythm of Black Ice into a broader seasonal model built around remasters, competitive systems, modernized maps, and frequent in-season updates. System Override is live now; Split Fire is the next confirmed milestone on September 1, 2026.