Residential Fires:
Residential structures are structures used to house people, a lightforce and an RA usually respond to these calls.
Commercial Fires:
Commercial structures are structures used for businesses, commerce or storage/shipping, a taskforce and an RA usually respond to these calls.
Industrial Fires:
Industrial structures are structures used for creating, producing, and storing products, a task force and an RA usually respond to these calls. Squad* can also be deployed depending on the type of industry.
*Squad: Radio identifier of HazMat apparatuses.
Explanation of 1-4 can be found here
Engine (E##):
Engine is the main fighting force when battling any type of structure fire. The firefighters on any Engine Company are responsible for fighting the fire a fast and safe as possible. 1-4 must listen to their captain + at all times, however if the decisions made by the captain (or above) are dangerous for the crew they are allowed to ignore these commands.
Truck (T##):
Truck is the supporting force when battling any type of structure fire. The firefighters on any Truck Company are responsible for venting the roof and trying to remove as much heat/smoke from the building as possible. If the building can't be vented then the crew from Truck will also enter the building and fight the fire alongside the Engine Crew. 1-4 must listen to their captain + at all times, however if the decisions made by the captain (or above) are dangerous for the crew they are allowed to ignore these commands.
Rescue Ambulance (RA##):
Rescue Ambulance will be outside of the building to accomadate victims and transport them to the hospital. RA will also be on standby to help out any injured firefighter. This can be burn wounds, small/large cuts or worse.
Battalion/Command (B/CM##):
Battalion/Command is the commanding uniton the scene also known as Incident Command. The command member on this rig is responsible for the whole scene. He/she will organise with the Captains. Any injured firefighter will fall under the responsibility of that Command member. The Command member makes the executive decissions but he/she must take other opinions into account. The Incident Commander can pull out all fireighters at any time if the building becomes unstable, no one can deny this command and must all listen.