The cross, which is considered sacred, represents the principles of charity, loyalty, chivalry, gallantry, generosity to friend and foe, protection of the weak and dexterity in service. Today, firefighters wear the Maltese Cross to symbolize their willingness to risk their lives to save others from the ravages of fire. The Maltese Cross is also the symbol used by St John Ambulance across the world. This is an organization that developed out of the crusades, and has been known as the Nights of St John. In Australia, St John Ambulance is a First Aid organization involved in teaching and performing first aid.
Most members are volunteers although in some states they still run the primary ambulance services.