New Delhi,5 May (Lok Sabha):Modernisation of the Indian Army is already underway in accordance with a Long Term Perspective Plan which is reviewed, monitored and updated from time to time. The Long Term Perspective Plan (15 years) is further split into Services Capital Acquisition Plans (5 years) and Annual Acquisition Plans.Modernisation of the Indian Army is a continuous process based on threat perception, operational challenges, technological changes and budget allocations.This information was given by Defence Minister Shri AK Antony in a written reply to Shri Abu Ayes Mondal in Lok Sabha today.