If you own the game on Steam, you do not need these files. Steam handles all updates (including v1033) automatically.
Right-clicking and selecting "Extract Here" (using WinRAR or 7-Zip). Running the .exe found inside the extracted folder. Ground Branch v1033 b7423.part03.rar
Be cautious when downloading split .rar files from unofficial sources, as they are often used to distribute pirated content which may contain malware. If you own the game on Steam, you do not need these files
Ground Branch (a hardcore tactical FPS developed by BlackFoot Studios). Ground Branch v1033 b7423.part03.rar