Where is Operation Grid Assault in MW4 DMZ?

At The Grid. The Grid is in central hajin city.

What are the Operation Grid Assault objectives?

Find the drone control; Recover the first and second code segments; Compile the code; Upload the code; Broadcast the kill code.

What does Operation Grid Assault reward?

$25,000 DMZ Cash; DMZ Codex also lists Roze’s High-Rise Armory key. It also unlocks The Heli infil (reported).

MW4 DMZ Operation Grid Assault Walkthrough

Reported by one source (DMZ Codex), read 21 October 2026. Not official and not yet confirmed by a second source.

Operation Grid Assault is an MW4 DMZ Story Mission at The Grid. It has 5 objectives and pays $25,000 DMZ Cash, and it unlocks The Heli infil.

Location	The Grid
Mission threat	Not listed (area up to Extreme, official rating)
Rewards	$25,000 DMZ Cash; DMZ Codex also lists Roze’s High-Rise Armory key
Unlocks	The Heli infil (reported)

Operation Grid Assault takes place at The Grid, shown on our schematic of Hajin; the outlined cell is the reported grid of its key reward, the Roze’s Highrise Armory. Positions are approximate. Open The Grid on the interactive map.

Operation Grid Assault objectives

Find the drone control
Recover the first and second code segments
Compile the code
Upload the code
Broadcast the kill code

Tick these off in the MW4 DMZ mission tracker; it saves in your browser.

How to complete Operation Grid Assault

Follow the marker to the drone control at DBN Headquarters.
Recover the two code segments in order. The recorded route goes to Hanex Bank for the first and back to DBN Headquarters for the second; follow your current markers.
Compile the code, then upload it at the marked point in DBN Headquarters.
Broadcast the kill code and wait for the Mission Complete banner before you leave the area.

Tips for Operation Grid Assault

Every named block in The Grid is Critical threat, and the Netshin Tech Complex is Extreme. Plan your exfil before you start.

About The Grid

The walled-off business district at the heart of Hajin City. Every named block is Critical and the Nenshin Tech Complex twin towers are Extreme, the most dangerous rating in DMZ. See its named zones and threat levels on the The Grid page, or find it on the MW4 DMZ map.

Key reward

DMZ Codex lists the Roze’s Highrise Armory key as a reward for this mission. That key opens an armory in the Netshin high-rise; the exact door is not reported yet, reported at grid G6.

Next in MW4 DMZ

Next Story Mission: Operation Critical Extraction · Mirae General Hospital
Use the reward: Roze’s Highrise Armory key
See The Grid on the MW4 DMZ map
Key in the same area: Netshin IT Room
Key in the same area: Executive Arms Auction
Track every objective in the mission tracker

Other MW4 DMZ Story Missions

Operation Critical Extraction · Mirae General Hospital
Operation Silent Ledger · Heavenly Luck Casino, Cheongun Village
Operation Shopping Hacks · NuriGO Mall
Operation Fallen Ember · Haneul Nuclear Reactor
Operation Iron Citadel · Chang-san Air Base

Sources: DMZ Codex story missions (third party, read 21 October 2026). Walkthrough written in our own words. Back to all MW4 DMZ missions.