Following the recent release of Day of Defeat Source, Valve's Steam service is set to welcome another World War II shooter - Tripwire's Unreal Engine 2.5-based Red Orchestra.
Actually, technically, what we're dealing with is Red Orchestra: Ostfront 41-45, in which players join forces with one another on the Russian front and pick from 28 infantry weapons or join in the manning of one of 14 vehicles, over more than a dozen maps.
It's all aiming to be hugely authentic, as these things often are, and the official website is full of all sorts of detailed information, right down to the actual rate-of-fire number for a German half-track. This writer also had no idea that the German Panzerkampfwagen only did 46kph.
PC Gamer UK has more details in its current issue - one of the things highlighted by that piece was the lack of crosshairs, and the way the gun position changes on screen so that you can't simply stick a crosshair on your monitor to cheat.
The original Red Orchestra, in case you can't place the name, was the mod that won NVIDIA's $1,000,000 Make Something Unreal" contest. Ostfront 41-45 is a standalone follow-up. We'll let you know when Valve announces a release date.