Battlefield 2: Special Forces (BF2 version 1.1) readme:

IMPORTANT MESSAGE REGARDING EXPANSION PACK AND MULTIPLAYER
When Battlefield 2: Special Forces is installed, a new update is applied. However, with this new content it is not possible to play on the Internet or LAN with Battlefield 2 1.03 users.

To be able to play together with Battlefield 2 core users, you need to have update 1.1 or later.

- In order to play Special Forces in multiplayer on the internet you will need to download the latest patch from EA.

- The NIGHT VISION is bound to the "7" key by default. When it is enabled, it will allow you to see better in dark areas. There is a battery life on the goggles that will deplete with usage and replenish when not in use.

- The GRAPPLING HOOK is part of the Assault and Anti-tank kits. Throw it using the fire or alternate fire buttons. Press "E" to get on and off of the rope.
Use the direction keys to climb the rope. The rope will connect to any static object in the world, which means it will not work on terrain or vehicles.

- The ZIP LINE is part of the Special Forces and Sniper kits. Use the fire button to shoot the line and use the alternate fire button to check if the target is a
viable connection point or not. Once the line is in place, use "E" to get on.You will slide down the line automatically.

- The FLASH BANG is used to stun other players. The FLASH BANG is part of the Assault kit. Use it like a hand grenade. When it detonates, anyone in the effect area will be deafened and those looking at the explosion will be blinded as well.

- The TEAR GAS will linger in an area for a short time. The TEAR GAS is part of the Support kit. While active, anyone in the cloud will become affected. While affected, players will be blind and unable to sprint. Use the GAS MASK (default key "8") to avoid being affected by the gas. Once affected however, the gas mask will not cure you. It will only prevent further affects.

-Unlocks:  By playing on a Battlefield 2: Special Forces map, you will gain the priviledge of being able to unlock some of the Battlefield 2: Special Forces weapons for use in regular BF2 maps. These unlocks are considered to be tier 2 unlocks, where as the original unlocks are considered to be tier 1. You must first have unlocked the tier 1 weapon for a particular kit before you can access and unlock the tier 2 weapon. As an example, if you must unlock the G3A3 for the assault kit before you can unlock the F2000 for the assault kit.

- The grappling hook and zip line take roughly 15 seconds to reload at the resupply crate.