Client replays are generated when you leave a match or custom battle. They are a recording created from your game’s point of view of the occurences in the match. Client replays tend to lack some data from the battle since some data is not available to your game client during a match.
Launcher logs (file extension: .txt) are files generated by the War Thunder Launcher. The log contains a record of all the actions the launcher tried to perform during one secluded opening session. The Launcher log is initialized as soon as the user starts the game (thus opening the launcher) and finalized when the launcher closes itself to either start the game or quit to desktop. The Launcher log helps the technical administration to identify problems within the launcher's code and is thus very important when dealing with launcher related issues.
Client logs (file extension: .clog) are files generated by the War Thunder client and show a reflection of all the actions a user has performed in one game session. As soon as the launcher initialises the start of the game, a new client log is being started, which is finalised when the client is closed (the game session ends). Besides recording the actions of the user, it also records the client-side calculations and has a built-in error catching system that will allow the technical administration to identify game code or synchronisation issues efficiently.
The DxDiag log (file extension: .txt) is a text document that is created by Microsoft's DirectX Diagnostic Tool, showing non-personalized information about the hardware and drivers of your system. The DxDiag log file helps our technical administration to identify whether the problem you encounter is happening due to incompatibilities or issues with certain hardware or driver components on your system. It is especially important with display or sound device issues, as it helps to identify the devices and their drivers easily.