Games like Full Spectrum Warrior
Games like Full Spectrum Warrior include Arma 3, Arma Reforger, Call to Arms, Men of War: Assault Squad 2, and Arma 2: Operation Arrowhead. We matched them by the tags players give Full Spectrum Warrior on Steam (Strategy, Action, Tactical, Military, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Arma 3
Shared: Action · Military · Simulation

Arma Reforger
Shared: Military · Action · Simulation

Call to Arms
Shared: Strategy · Action · Military

Men of War: Assault Squad 2
Shared: Strategy · Action · Tactical

Arma 2: Operation Arrowhead
Shared: Action · Military · Simulation

Call of Duty®
Shared: Action · Singleplayer · Military

Hell Let Loose
Shared: Shooter · Singleplayer · Action

GROUND BRANCH
Shared: Tactical · Military · Action

Ravenfield
Shared: Singleplayer · Military · Action

Hell Let Loose: Vietnam
Shared: Action · Strategy · Simulation

Total War: THREE KINGDOMS
Shared: Strategy · Military · Tactical

Door Kickers
Shared: Strategy · Tactical · Action

Battlefield™ 6
Shared: Military · Action · Singleplayer

Zero Hour
Shared: Tactical · Action · Shooter

Door Kickers 2: Task Force North
Shared: Tactical · Military · Action

Counter-Strike: Source
Shared: Action · Shooter · Tactical

Insurgency
Shared: Tactical · Action · Military

Tom Clancy's Ghost Recon® Wildlands
Shared: Singleplayer · Tactical · Action

Hearts of Iron IV
Shared: Strategy · Military · Tactical

Aliens: Dark Descent
Shared: Strategy · Action · Tactical

WARDOGS
Shared: Action · Military · Tactical

Steel Division: Normandy 44
Shared: Strategy · Military · Action

Call of Duty®: Modern Warfare®
Shared: Action · Singleplayer · Military

Police Stories
Shared: Strategy · Action · Tactical