when the next major global war begins

You are in it.

Global lockdown based on a bad flu. Class war is and always has been perpetual and overarching all other types of wars. The wars not only depopulate but they also foster trauma and sickness. As long as the population is distracted with that they aren't resisting. Sick suffering slaves are the best. Vaccines will make millions or billions dead and/or sick.

Fifth-generation warfare (5GW) is propaganda and information warfare to accomplish strategic, operational, and tactical objectives, without measurable damage that the target can identify. Importantly in 5GW the target may not even know it has been attacked, thus the target has already lost that battle.