'Operation Sadhbhavana' is an initiative by the Indian Army that involves undertaking welfare activities such as running Army Goodwill Schools, infrastructure development projects, and educational tours for children in remote areas of Ladakh. The operation aims to address the needs of people affected by terrorism and improve social indices like education and healthcare. However, there is no specific mention of the operation aiming to build harmonious relationships between religious communities in Ladakh. Therefore, only statement 1 is correct.