On Friday, an emergency-support helicopter in La Araucania crashed, killing its pilot and a mechanic, according to officials.
Authorities reported that 11 casualties, including a firefighter, died in the town of Santa Juana in Biobio, located some 310 miles (500 km) south of capital Santiago.
Since late last week, helicopters have dropped fire retardant over raging fires amid billowing clouds of smoke that obstructed roads, while firefighters and local residents alike sought to contain the flames against the backdrop of a hazy, orange-tinted sky.
The orders allow for the deployment of soldiers and additional resources to deal with the natural disaster.
Some 40,000 hectares (99,000 acres) have been torched by the fires, according to official data released late Friday, an area larger than the U.S. city of Philadelphia.