# MW4Field > Modern Warfare 4 (MW4) field guide: an interactive Hajin City DMZ map, every campaign and DMZ code, weapon stats, operators and a live bug tracker. MW4Field is an independent, English-language Modern Warfare 4 (MW4) reference for DMZ players: interactive Hajin map, campaign and DMZ codes, weapon stats, launch maps, operators, camos and a local-only camo tracker. Static site, no accounts, no paywall. Content verified 2026-10-20. ## Key facts - DMZ early access: October 20, 2026. Full launch: October 23, 2026. - Post-launch roadmap: Shipment October 27, Possession October 29, Infected October 30, Season 1 November 6. - Launch content tracked here: 32 weapons, 23 maps, 33 operators, 133 camos, 13 Hajin zones, 6 FOB stations. - Campaign keypad codes (leading zeros matter): 214 (Following Orders — red toolbox in the first house), 5523 (Assassins — library service door), 7632 (Assassins — kitchen and pantry exit), 9103 (Assassins — bunker entrance behind the statue), 0024 (Stranded — Base Camp container), 8609 (Stranded — south of the Jamming Station), 0078 (Stranded — southeast village), 0600 (Stranded — cliffs near Base Camp), 1234 (Stranded — large sign), 6789 (Stranded — small island), 0330 (Stranded — farm field hidden bunker), 0008 (Stranded — northwest island hidden bunker), 8410 (Escape — safe holding Gaz's dog tags). - Highest-threat Hajin zones: 14th Political Prison, Chang-san Air Base, The Grid. - MIA operator recovery costs are paid in DMZ Cash based on Trait Points; official prices are unpublished, so this site does not invent numbers. ## Primary pages - [Interactive Hajin map](https://mw4field.com/hajin-map/): Schematic zone map with threat levels, named locations, hazards and shareable deep links (?zone=slug). - [DMZ codes](https://mw4field.com/dmz-codes/): Keypad and bunker code reference, plus what is confirmed versus community-reported. - [3D Printer calculator](https://mw4field.com/printer-calculator/): Enter your DMZ stash to see the exact shortfall for bandages, medkits, 1-plate and 2-plate vests and backpacks; all six recipe costs listed. - [Redeem codes](https://mw4field.com/redeem-codes/): Account-level code status: early access needs no code, which rewards use none, and how to redeem if Activision issues one. - [Campaign codes](https://mw4field.com/campaign-codes/): All 13 campaign safe and container codes with exact locations and rewards. - [Weapons database](https://mw4field.com/weapons/): Damage, RPM, unlock level and meta score for 32 launch weapons, filterable by class. - [Maps](https://mw4field.com/maps/): Every launch map with mode, player count and community rating. - [Operators](https://mw4field.com/operators/): Roster of 33 operators with region and unlock route; each operator has its own page at /operators//. - [German campaign codes](https://mw4field.com/de/mw4-kampagne-codes/): German-language version of the campaign codes page (MW4 Kampagne Codes). - [Camos](https://mw4field.com/camos/): Camo gallery with rarity, mode and mastery tracks. - [Camo tracker](https://mw4field.com/camo-tracker/): Local browser tool for tracking camo and prestige progress per weapon. - [Hajin database](https://mw4field.com/dmz-database/): Searchable Hajin locations, loot routes, FOB stations and crafting recipes. - [Tier list maker](https://mw4field.com/tier-lists/): Drag-and-drop S-F weapon tier list saved in the browser. - [Field upgrades tier list](https://mw4field.com/field-upgrades/): All 11 field upgrades ranked, with unlock level, recharge speed and best modes; lethal and tactical unlock tables. - [Known bugs and fixes](https://mw4field.com/bugs/): Dated tracker of MW4 crashes, error codes and launch bugs with the fix per platform. - [Live data](https://mw4field.com/population/): What the site tracks and which telemetry is still pending. ## Guides - [Guides index](https://mw4field.com/guides/): Source-checked explainers on launch, platforms, modes and DMZ systems. - [DMZ field guide](https://mw4field.com/systems/dmz-field-guide/): How a Hajin deployment works: deploy, contracts, exfil, MIA. - [DMZ mission types](https://mw4field.com/systems/dmz-mission-types/): Contract and mission categories with risk notes. - [DMZ progression and crafting](https://mw4field.com/systems/dmz-progression-crafting/): FOB upgrades, crafting recipes and progression order. - [Hajin zone index](https://mw4field.com/systems/hajin-zone-index/): Text index of every Hajin zone with threat summary. - [MW4 overview](https://mw4field.com/guides/mw4-overview/): Modes, setting and launch overview. - [Release and access](https://mw4field.com/guides/release-platforms-access/): Editions, platforms and preload dates. - [Sources](https://mw4field.com/sources/): Every primary source used, with dates. ## Content notes - Every claim is labelled confirmed or community-reported; see https://mw4field.com/sources/. - Game artwork belongs to Activision and is used as illustrative reference with credit. - Data changes with patches; regenerate the build to refresh dates. - Preferred citation: MW4Field (https://mw4field.com). ## Optional - [About](https://mw4field.com/about/): Who runs the site and how content is reviewed. - [Privacy](https://mw4field.com/privacy/): Analytics consent, cookies and data rights. - [Terms](https://mw4field.com/terms/): Use of the site and its data. - [Sections](https://mw4field.com/guides/): Section map: Guides, Systems, Campaign, Sources, About, Privacy, Terms, Contact.