The user plays Sergeant Smith, while the other characters are virtual constructs. Using a laptop, the user speaks for the sergeant, in Arabic, through a microphone headset and controls the character’s actions by typing keyboard instructions.

The project is part of a major initiative, financed by the Defense Advanced Research Projects Agency, or Darpa, to explore new ways of training troops by making use of the large installed base of existing technology, especially laptops. —Margaret Wertheim

—Virtual Camp Trains Soldiers in Arabic, and More (NY Times)

It’s hard to tell from the description, but it sounds like a command-line interface… I wouldn’t call clicking an arrow key or tapping the spacebar “typing”.

Via Grand Text Auto.