Event

An event in Halo Infinite, later known as an Operation, is a special update with limited-time contents.

Overview

Events prior to Season 5: Reckoning

Events in Halo Infinite are around a theme. Some events have event passes, which are free Battle Passes that are active alongside any other owned Battle Passes for a limited time. Each event challenge that is completed advances the Battle Pass by one full level. As there are a limited number of event-specific challenges available while the event is active, completing the entire Battle Pass requires participating in multiple events over the course of a season. During the event, the Shop also features several bundles that are thematically related to the event.

Operations

Events were replaced by Operations in Season 05: Reckoning. Operations feature free 20-tier passes, with a premium upgrade alongside it; the premium upgrade costs 500 Halo Credits rewards one item and unlocks the fourth active challenge slot, while the Premium Pass Bundle costs 2000 Halo Credits and immediately unlocks all 20 tiers. Each Operation lasts anywhere from four to six weeks. Operation passes are featured alongside the main season’s battle pass, but they must be equipped in place of the seasonal Battle Pass; as such, players cannot make progress on both passes at the same time. Once the four to six week period ends, the Operation is made available in the Shop for purchase. Only Winter Update was retroactively turned in an Operation; all remaining prior events cannot be accessed or purchased.

List of events

Please see the respective event pages for their event passes.

Season 01: Heroes of Reach

Main article: Season 01: Heroes of Reach

List of Events
Event	Content	Duration
20th Anniversary	8 items gifted to players.	15 November 2021 - 22 November 2021
Fractures: Tenrai	Fiesta playlist 30-Tier Event Pass with exclusive customization options, including the Yoroi armor core.	Week 1: 23 November - 29 November 2021 Week 2: 04 January - 10 January 2022 Week 3: 01 February - 07 February 2022 Week 4: 22 February - 28 February 2022 Week 5: 29 March - 04 April 2022 Week 6: 19 April - 25 April 2022
HCS Spotlight	Unique challenges that offered more XP.	14 December 2021 - 20 December 2021
Winter Contingency	10-Tier Event Pass with exclusive customization options, focused on Mark VII unlocks, including armor coatings.	21 December 2021 - 04 January 2022
Cyber Showdown	Attrition playlist 10-Tier Event Pass with exclusive customization options, focused on cyberpunk and neon themed armor effects.	18 January - 31 January 2022
Tactical Ops	Tactical Ops playlist 10-Tier Event Pass with exclusive customization options, focused on Mark VII unlocks, including Mark V Zeta.	9 March - 23 March 2022

Season 02: Lone Wolves

Main article: Season 02: Lone Wolves

List of Events
Event	Content	Duration
Interference	Narrative Event Last Spartan Standing playlist 10-Tier Event Pass with exclusive customization options, focused on Rakshasa armor core unlocks, including SHIKARI-class Mjolnir.	3 May - 16 May 2022
Fractures: Entrenched	Land Grab playlist 30-Tier Event Pass with exclusive customization options, including the Eaglestrike armor core.	Week 1: 24 May - 30 May 2022 Week 2: 14 June - 20 June 2022 Week 3: 5 July - 11 July 2022 Week 4: 16 August - 22 August 2022 Week 5: 27 September - 4 October 2022 Week 6: 25 October - 1 November 2022
Alpha Pack	Narrative Event Last Spartan Standing playlist 10-Tier Event Pass with exclusive customization options, focused on Rakshasa armor core, including MORRIGAN-class Mjolnir.	19 July - 1 August 2022
The Yappening	Methane Menagerie playlist 10-Tier Event Pass with exclusive customization options, focusing on miscellaneous, bright-colored unlocks.	6 September - 20 September 2022

Winter Update

Main article: Winter Update

Upon its release, the Winter Update was treated as an interim season to bridge the gap between Season 2 and 3. With the introduction of Operations, the Winter Update has retroactively been classified as an Operation. There were three other events held during the period in which Winter Update was active.

List of Events
Event	Content	Duration
Winter Update	30-Tier free Operation Pass	08 November 2022 - 07 March 2023
Winter Contingency II	10-Tier Event Pass with exclusive customization options, based on winter and the Christmas holidays.	20 December 2021 - 02 January 2022
Joint Fire	Covert One Flag playlist 10-Tier Event Pass with exclusive customization options, focused on JFO-class Mjolnir.	17 January 2023 - 31 January 2023
Noble Intention	Community Collection playlist 10-Tier Event Pass with exclusive customization options, focused on Rosenda-A344 and Thom-A293 of NOBLE Team.	7 February 2023 - 21 February 2023

Season 03: Echoes Within

Main article: Season 03: Echoes Within

List of Events
Event	Content	Duration
Mindfall	Narrative Event 10-Tier Event Pass with exclusive customization options	7 March - 21 March 2023
Fractures: Firewall	20-Tier Event Pass with exclusive customization options for the Chimera armor core.	Week 1: 21 March - 28 March 2023 Week 2: 11 April - 18 April 2023 Week 3: 23 May - 29 May 2023 Week 4: 13 June - 20 June 2023
Site Unseen	Narrative Event 10-Tier Event Pass with exclusive customization options	2 May - 16 May 2023

Season 04: Infection

Main article: Season 04: Infection

List of Events
Event	Content	Duration
HAZMAT	10-tier Event Pass with exclusive customization options for the Hazmat armor core	27 June - 11 July 2023
Tenrai II	10-tier Event Pass with exclusive customization options for the Yoroi armor core.	18 July - 1 August 2023
Cyber Showdown II	10-tier Event Pass with exclusive customization options.	8 - 22 August 2023
Containment	10-tier Event Pass with exclusive customization options for the Hazmat armor core.	29 August - 12 September 2023
Fractures: Tenrai III	10-tier Event Pass with exclusive customization options for the Yoroi armor core.	19 September - 3 October 2023

Season 05: Reckoning

Main article: Season 05: Reckoning

List of Operations
Operations	Content	Duration
Combined Arms	20-Tier free Operation Pass Purchasing Premium Pass for 500 cR rewards Grey Hunter armor coating	14 November - 19 December 2023
Winter Contingency III	20-Tier free Operation Pass Purchasing Premium Pass for 500 cR rewards Ice Fissure armor coating	19 December 2023 - 30 January 2024

Content Update 29

Main article: Content Update 29

List of Operations
Operations	Content	Duration
Spirit of Fire	20-Tier free Operation Pass Purchasing Premium Pass rewards Evolved MA5 weapon coating	January 30 - March 5 2024
Cyber Showdown III	20-Tier free Operation Pass Purchasing Premium Pass rewards Emberbreak armor coating	March 6 - April 1 2024
The Yappening II	20-Tier free Operation Pass Purchasing Premium Pass rewards Glibnub's Golden Guns weapon coating	April 2 - April 30 2024