S.O.G. Prairie Fire and Global Mobilization have separate server files that you need to download from Steam. Once you have those, you can upload them to your Arma 3 server and enable the DLC in Commandline Manager. Take a backup and stop the server before uploading.
Download the DLC files
- Open
steam://nav/consolein your browser. Allow it to open Steam if prompted; this takes you to the Steam Console. - Find the depot for the DLC you want. Both use Arma 3's server App ID,
233780:- Global Mobilization: depot
233787. - S.O.G. Prairie Fire: depot
233790.
- Global Mobilization: depot
- Copy the manifest number for the version you need from the Global Mobilization manifests or S.O.G. Prairie Fire manifests page. A manifest identifies a particular version of the download.
- In Steam Console, enter the command below. Replace
DEPOT_IDandMANIFEST_IDwith the values from the previous steps:download_depot 233780 DEPOT_ID MANIFEST_ID
The screenshot shows an example download command. Use the manifest for the version you need rather than copying the old number shown here.

- Wait for Steam to finish. The console will show the folder containing the downloaded files; open that folder.
Upload and enable the DLC
- Connect to your server with FileZilla. If you need the connection steps, see How to connect to FTP.
- Upload the DLC folders from the downloaded depot into the root of your Arma 3 server, alongside the other mod folders. For Global Mobilization, the files look like this:

- Open Commandline Manager in TCAdmin.
- In Server Mods, enter
gm;for Global Mobilization orvn;for S.O.G. Prairie Fire. These entries tell the server which folder to load, so the names must match the folders you uploaded. Keep any other mods you already use in the list.
- Click Apply, then start the server.