I agree. Drones and bombs and cameras and signal interception are essential tools for winning wars, defeating the enemies communication, infrastructure or supplies. But its still people that are needed for presence, control, interaction, intelligence, direction, politics and rebuilding. In other words, can't resolve disputes, build bridges, or hold elections from a tank. Can't do these things hiding in a bush with a drone overhead as backup. And if there are people involved, then there are going to be fights. If there are fights, then people are going to need guns; which is what infantry just so happen to carry.