“The order was given that the troops must be deployed, and if all are not on the ground yet, they will be there soon,” the defence minister, Frans Kapofi, said on Sunday.
“They are deployed from various regions and will be deployed to all affected areas,” he said.
At least nine antelope have been killed in the blaze, which was believed to have started from charcoal production activities on bordering commercial farms, the ministry said.
The main feature of the 8,600 sq mile (22,270 sq km) park is the ancient Etosha salt pan, which is 80 miles long and 30 wide and draws huge flocks of flamingoes during the rainy season.