We have to understand the basics first. Before preparing for a big war, India needs clear deterrence against both likely adversaries. With China, deterrence lies in making the costs of any aggression unaffordable. For Pakistan, the deterrence has to be punitive, with no hope of face-saving retaliation. For example, after Pulwama, if Balakot was bombed, such should have been the disparity in the IAF’s favour that the PAF wouldn’t even dare challenge it. That’s what happened during Kargil when the missile gap was in India’s favour.
In the case of the Army, for deterrence against both adversaries, the need is for long-range artillery, armed drones and copious volumes of loitering ammunition. More smart artillery ammunition. That could be among the first list of purchases, if only a little more money becomes available. Or modern, nippier air defence for forward units, given that the skies are going to be swarming with armed drones and cruise missiles. The infantry also needs rapidly standardised gear, from small arms and protective equipment to shoes, helmets, secure communication, night vision, and modern anti-tank guided missiles. We’ve been buying these in hundreds, and that’s neither serious nor funny.