India and China fought a brief war over their 3,500-kilometre Himalayan border in 1962, and both sides claim the other is occupying big but largely uninhabited chunks of their territory.
Although India and China have signed a treaty to maintain “peace and tranquility” along the disputed frontier and agreed to find a political solution to the row, talks have made little progress.
Last year, the army said Chinese soldiers had crossed the border in Arunachal Pradesh state illegally and entered their territory, urging the government to deploy more troops.
Deployment: “Two army divisions comprising 25,000 to 30,000 soldiers each will be deployed along the border in Arunachal,” said JJ Singh, the governor of the remote state.
“It (deployment) was part of the planned augmentation of our capabilities to defend the country ... The increase in force strength is to meet the future national security challenge,” Singh said in Itanagar, capital of Arunachal Pradesh.
Other than troops, India will add more firepower in the disputed zone with light 155mm guns, helicopters and unmanned aerial vehicles to strengthen its defences, officials said. They will also build airstrips close to the border.
The state shares a more than 1,000 km long disputed border with China.