The Maltese cross is known around the world as a symbol of the fire service. It is often seen painted on fire trucks, on the clothing of firefighters, depicted on firefighters badges, and is quite often the chosen design of firefighter tattoos.

The Maltese cross has its origins going back to the era of the Crusades and is named after the island of Malta which came to be the home of the Knights of St. John. The Knights of St. John existed during the 11th and 12 centuries. To help identify friend from foe during the fighting, they needed a symbol that could be used to quickly and easily identify themselves. They chose the Cross of Calvary (which would later be known as the Maltese cross) as their symbol because the Crusades were battles fought for a holy cause. During these battles, the enemies of the knights commonly used fire as a weapon. It was not uncommon for a Knight to have to risk his own life to extinguish a fire or rescue a comrade. Because of their ability to fight fires, and the pride and honor they took in the care of their sick and injured, the Maltese cross evolved into a fitting symbol of the modern fire service.  The cross has since come to represent the principles of charity, loyalty, gallantry, generosity to friend and foe, dexterity of service, and protection of the weak.