"The force, which began as an assorted group of less than 1500 men handpicked from different sources, has now more than 77000 men and women in its ranks and files. Its strength will further increase to 89,000 by 2015," Sinha told reporters here.
The DG said the force is not facing the problem of attrition unlike other forces.
"There is no attrition," he told PTI when asked whether ITBP personnel have sought voluntary retirement.
The force came into existence on October 24, 1962 in the wake of Chinese aggression.
"The force has been deployed in Chhatisgarh red-corridor, affected by Naxalism, and has carried out 3,243 operations and achieved commendable results," Sinha said.
The operations, which include area dominations and road openings besides Naxal encounters, has resulted in recovery of more than 100 kgs of explosives, over 1,500 arms and ammunition, and arrests of many ultras from Naxal hotbed in Chhattisgarh's Rajnandgaon district.
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Apart from border guarding, ITBP is involved in anti-Naxal operations, combating trans-border crimes, smuggling and unauthorised entry and exit from India.
ITBP personnel are deployed in border guarding duties from Karakoram Pass in Ladakh (J&K) to Jechap La in Arunachal Pradesh covering 3,488 Km of Indo-China border and are manning border outposts at altitudes ranging from 9,000 feet to 18,600 ft.
"It has contributed immensely to United Nations Peace keeping missions in Angola, Namibia, Cambodia, Bosnia & Herzegovina, Mozambique Kosovo, Sudan and Fiji.
"Presently, ITBP troops are deployed in UN Peace Keeping Missions in DR of Congo since November, 2005 and its commando units provide security to the Embassy and Consulates of India in Afghanistan," he said. (MORE)