NEW DELHI: The foundation stone for the new Army headquarters or the ‘ Thal Sena Bhawan’ (TSB), which will house 1,684 officers and 4,330 other staff personnel by bringing together the eight existing offices of the force in different parts of the Capital, was laid by defence minister Rajnath Singh at Delhi Cantonment on Friday.The TSB, spread over 39 acres to include the 6,104 offices in a multi-storey “green” building complex with parking, will take at least five years to be completed at a cost of around Rs 750 crore.