> For the complete documentation index, see [llms.txt](https://raia-software-inc.gitbook.io/tacview/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://raia-software-inc.gitbook.io/tacview/flight-simulator/cmo.md).

# Command: Modern Operations

* `Command: Modern Operations` (`C:MO`) uses real-time telemetry, which is a feature of Tacview Advanced, so make sure you have purchased and installed that version of Tacview either through [Steam](https://store.steampowered.com/app/1177050/Tacview_Advanced/) or through the [website](http://tacview.net/purchase).
* Tacview does not generate ACMI recordings when used with `C:MO`, in accordance with `C:MO` requirements.
* Customizations such as adding your own database entries and/or 3D objects are generally not available when using Tacview with `C:MO` because `C:MO`’s declarations override Tacview’s.
* `C:MO` controls most of Tacview’s UI features to provide a homogeneous experience. Object selection is done via the C:MO map and manipulation of the 3D view is limited to zooming in and out using the mouse wheel and rotating around the selected object using the right mouse button.

### Setup

In `C:MO`, go to `Game -> Game Options -> Tacview`.

![CMo Select Executable](/files/VUoKI3kGwv0N2e2R6ZIu)

Select the correct executable. If you have purchased Tacview Advanced through Steam, the executable will be something like:

* `C:\Program Files (x86)\Steam\steamapps\common\Tacview\Tacview64.exe` for 64-bit, or
* `C:\Program Files (x86)\Steam\steamapps\common\Tacview\Tacview.exe` for 32-bit.

If you have purchased Tacview Advanced through the website, the executable will be something like:

* `C:\Program Files (x86)\Tacview\Tacview64.exe` for 64-bit, or
* `C:\Program Files (x86)\Tacview\Tacview.exe` for 32-bit.

### Play

After launching a battle or campaign in `C:MO`, go to `View -> 3D View` to open a window within `C:MO` where Tacview will display real-time information from the battlefield.

![CMO 3D View](/files/HVTByhg3OP8afXmOEbLP)

Use the mouse wheel to zoom in and out, and the right mouse button to rotate around.

### Terrain Elevation and Textures

To display the same terrain elevation and textures in Tacview as in `C:PE`,

* Download the [elevation files](http://topex.ucsd.edu/pub/srtm30_plus/srtm30/data/) and place them in the folder `%ProgramData%\Tacview\Data\Terrain\SRTM30\`.
* Download the [texture files](http://warfaresims.slitherine.com/Tacview_Textures/) and place them in:`%ProgramData%\Tacview\Data\Terrain\Textures\`

To keep your system operating at peak performance, it is recommended to take only the tiles that you need in order to run your favourite campaigns and battles.

Close and re-launch Tacview in order to view the textures.

### Special Instructions for users of C:MO Standalone version with Tacview Steam version

If you are running `C:MO` standalone (non-Steam version), `C:MO` may have launched itself as administrator, which is not compatible with Tacview’s Steam version for security reasons.

Try running `C:MO` as a regular user (not an administrator) by copying the executable into another folder, such as `C:\Games\`

### Special Instructions for Windows 7 users

If you have 64-bit Windows 7, please download and install the [64-bit Windows Management Framework 3.0](https://download.microsoft.com/download/E/7/6/E76850B8-DA6E-4FF5-8CCE-A24FC513FD16/Windows6.1-KB2506143-x64.msu).

If you have 32-bit Windows 7, please download and install the [32-bit Windows Management Framework 3.0](https://download.microsoft.com/download/E/7/6/E76850B8-DA6E-4FF5-8CCE-A24FC513FD16/Windows6.1-KB2506143-x86.msu).

Restart your computer and try again.

#### Special Instructions for Proton users.

If `C:MO` fails to launch the Tacview Steam edition when running under Proton, this might be because the .NET library used by `C:MO` to validate Tacview’s digital certificate is missing. Try installing `.NET Framework 4.7.2`.