Modern Warfare 4 Ground War: Combat Outpost Explained — Two New Maps, Vehicles & How to Play (Weekend 2)

Quick answer (TL;DR)

Ground War: Combat Outpost is Modern Warfare 4's new large-scale mode — Infinity Ward calls it "the next evolution of Ground War." You establish Outposts to earn resources, spend those resources completing objectives, and fight across huge maps that mix vehicle and infantry combat with airborne Killstreaks overhead. It debuts in Weekend 2 of the MW4 Beta (the Open Beta), which runs August 28 – September 1, 2026, on two purpose-built maps set inside Hajin: Imjin Farmland and Wolves Stadium.

The one-line version: it's MW4's big-team, vehicle-driven playlist, it's free for everyone in the Open Beta (no pre-order, all platforms including Switch 2), and because it's a high-kill objective mode, it's the fastest weapon-XP farm in the Beta. Full game launches October 23, 2026.

• Live: Open Beta only — Aug 28, 10 AM PT → Sept 1, 10 AM PT
• Maps: Imjin Farmland + Wolves Stadium (both in Hajin)
• Player count: reported as 24v24 (48 players) by outlets; Activision has confirmed "large play spaces" with vehicles but has not published an exact count
• Why it matters: objective + vehicle kills = the fastest way to rank guns before launch

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Every Modern Warfare 4 Beta headline has gone to Kill Block and Warzone's Zodiac map — but the mode that quietly changes how you grind is Ground War: Combat Outpost. It only shows up in the second Beta weekend, most players won't touch it until August 28, and it's the biggest, most XP-dense playlist in the whole Beta.

This guide covers exactly what Combat Outpost is, how the Outpost-and-resource loop works, the two maps you'll play, when and how to get in, and why it's the smart mode to run if you're trying to level weapons before the October 23 launch. Everything below is drawn from Activision's official Call of Duty: NEXT and Open Beta briefings — where a detail is still community-reported rather than Activision-confirmed, it's flagged as such. MW4 is not out yet; Combat Outpost is playable first in the Open Beta.

What is Ground War: Combat Outpost in Modern Warfare 4?

Combat Outpost is Modern Warfare 4's big-team mode, and it reworks the classic Ground War formula around a capture-and-spend economy. In Activision's own words: "In Combat Outpost, establish Outposts to earn resources, then put those resources to work completing further objectives. Expect large play spaces combining vehicle and infantry combat with powerful airborne Killstreaks overhead." (callofduty.com).

Infinity Ward frames it as "the next evolution of Ground War" — so if you've played Ground War in past Modern Warfare titles, the DNA is familiar: large maps, capturable points, tanks and transport vehicles, and constant respawns. The twist in MW4 is the resource layer. Instead of only holding flags for a ticker, capturing Outposts generates resources your team spends on further objectives, and — per community reporting from the Beta previews — expands the spawn locations available to your team across the map, so controlling more ground literally pushes your fight forward.

That loop rewards teams that play the map, not just the kill feed — which, combined with MW4's new Smartstreaks system (more on that below), makes it one of the most forgiving modes to contribute in.

When can you play Combat Outpost in the MW4 Beta?

Combat Outpost is Weekend 2 only. It is not in the Early Access (Weekend 1) Beta — it arrives with the Open Beta:

Beta stage	Dates (PT)	Access	Combat Outpost?
Early Access (Weekend 1)	Aug 21 – Aug 25	Pre-order / Beta code	❌ Not available
Open Beta (Weekend 2)	Aug 28 (10 AM) – Sept 1 (10 AM)	Free for everyone	✅ Yes

The Open Beta is open to all players on **Xbox Series X	S, Xbox on PC, PlayStation 5, Steam, Battle.net, and — for the first time — Nintendo Switch 2, with no pre-order or Beta code required (callofduty.com). You can preload the Open Beta from 9 AM PT on Wednesday, August 26** on every platform, so download it early and be ready when servers open Friday.

One caveat worth setting: Activision has said content unlocks progressively across the Beta ("additional maps, modes, and playlists become available" as the weekend runs), so Combat Outpost may appear in the playlist rotation rather than being pinned live the second servers open. If you don't see it Friday morning, check the featured playlists through the weekend.

What are the two Combat Outpost maps?

There are two purpose-built Combat Outpost maps in the Beta, and both are set within Hajin — the same Korean region that anchors MW4's DMZ and an upcoming Warzone map. Activision describes them as "distinctly different battlegrounds spanning open terrain, towering structures, and indoor objectives."

Map	Setting	Character
Imjin Farmland	Rural Hajin	Open terrain — long sightlines, vehicle-heavy lanes, exposed objective runs
Wolves Stadium	Urban Hajin	Towering structures + indoor objectives — tighter, verticality, infantry-favored pockets

The practical read: Imjin Farmland is where vehicles and long-range weapons shine, so bring an LMG or marksman rifle and use armor to push objectives. Wolves Stadium funnels fights into buildings and stairwells, so SMGs and shotguns get their moment even in a big-team mode. Running both is the fastest way to feel out MW4's new movement (Mantle Slide, Mantle Momentum) at scale.

How many players is Combat Outpost — and what vehicles are in it?

Here's the confirmed-vs-reported line, because it matters:

• Confirmed (Activision): Combat Outpost features "large play spaces combining vehicle and infantry combat with powerful airborne Killstreaks overhead." Vehicles and air Killstreaks are official.
• Reported (community/outlets, not Activision): multiple guides list Combat Outpost as 24v24 — a 48-player mode. Activision's own blogs describe the scale but have not published an exact player count as of this writing. Treat 24v24 as the strong community expectation, not a locked number.

Either way, expect the full big-team package: ground vehicles for pushing and rotating, plus MW4's overhauled Killstreak lineup raining down from above. Because the maps are large and respawns are constant, engagements come thick and fast — which is exactly what makes this mode a leveling machine.

Is Combat Outpost the fastest way to level up in the MW4 Beta?

Short answer: yes — for weapon XP, it's the best mode in the Beta. Three MW4 systems stack in your favor here:

• Volume. Big-team modes put more enemies, more objectives and more respawns in front of you per minute than 6v6. More engagements = more weapon XP per match.
• Smartstreaks. MW4 changed Killstreaks so they "reward both kills and objective play." Capturing Outposts and completing objectives now feeds your streaks — meaning even support players earn hardware. Objective XP also compounds your match score, which drives account rank.
• Weapon Progression. MW4's new system means you "unlock an attachment once" and it carries across your arsenal, so time spent maxing one gun in Combat Outpost pays off on every other weapon you build (callofduty.com). There are 19 weapons in the Beta to run through.

The catch is the same one every CoD grinder hits: the Beta has a level cap, your Beta progress resets when the full game launches on October 23, and launch lobbies get sweaty fast. If you'd rather spend the Beta actually enjoying the mode — and then hit the ground running at launch with guns already leveled and camos already done — that's where a head-start pays off.

Lock in your MW4 setup before the October 23 launch — bot lobbies, weapon leveling and the camo grind, ready day one:

- MW4 Bot Lobbies — private easy lobbies from $5.90; farm weapon XP and camos without the SBMM sweat

- MW4 Weapon Leveling — max any gun and unlock every attachment fast

- MW4 Account Leveling — skip the rank grind with pro players

- MW4 Mastery Camo Bundle — all mastery camos, done for you

- All MW4 services →

How Combat Outpost fits the rest of the MW4 Beta

Combat Outpost is one piece of a stacked Weekend 2. If you're planning your Open Beta weekend, these pair with it:

• The other Weekend 2 headliner is Warzone Resurgence on the new Zodiac map — see our MW4 Beta Warzone: Zodiac Resurgence guide.
• For the complete playlist across both weekends, read every confirmed Beta map, mode and weapon.
• Grinding rewards? The Beta level cap and every weekend reward explains how far you can rank in each weekend.
• Want the pure XP route? Our how to level up fast in the MW4 Beta guide breaks down the best modes and methods.
• Free-access questions are covered in how to play the Open Beta free on every platform.

FAQ

Is Ground War in the Modern Warfare 4 Beta? Yes, but only in Weekend 2. Ground War: Combat Outpost is part of the Open Beta (August 28 – September 1), not the Early Access weekend (August 21 – 25). All players can access it for free on every platform, including Nintendo Switch 2, with no pre-order required.

What maps does Combat Outpost use in the Beta? Two purpose-built maps, both set in Hajin: Imjin Farmland (open, rural, vehicle-heavy terrain) and Wolves Stadium (urban, with towering structures and indoor objectives). Activision describes them as "distinctly different battlegrounds."

How many players is MW4 Combat Outpost? Activision confirms it's a "large play space" with vehicles and airborne Killstreaks but has not published an official player count. Community guides widely report it as 24v24 (48 players) — treat that as the expected number, not an Activision-confirmed figure.

How does Combat Outpost actually work? You capture Outposts to earn resources, then spend those resources on completing further objectives, with the fight escalating across large maps that mix infantry and vehicle combat. It's described as "the next evolution of Ground War," so expect capturable points, tanks and transport, and constant respawns.

Is Combat Outpost good for leveling weapons? It's the strongest weapon-XP mode in the Beta. High player counts mean more engagements per match, MW4's new Smartstreaks reward objective play as well as kills, and the Weapon Progression system means attachments you unlock carry across your whole arsenal. Note that all Beta progress resets when MW4 launches on October 23, 2026.

Can I preload the Open Beta? Yes. All players can preload the Open Beta starting 9 AM PT on Wednesday, August 26, on every platform. Download it early so you're ready when servers open at 10 AM PT on Friday, August 28.