I would honestly say the last evolution of warfare that we saw like this, IMPO, would be WW1 with introduction of modern IDF and the machine gun. Granted UW aside, when we are talking large scale conventional forces, I can't think of anything that I can point to more shifting in warfare than that, that is comparable to what we are seeing now.
That said, lessons learned of WW1 we learned to fight in smaller dispersed units, warp speed into armor and the use of mobility. I would say that those lessons learned are still prevalent today. Smaller units, speed and mobility (not getting caught into opposing lines when possible) and a virtual armor to protect fixed positions. Where or how that comes into play is better left to the people in the know, working that problem.
For your basic grunt, these are super scary times.
That said, lessons learned of WW1 we learned to fight in smaller dispersed units, warp speed into armor and the use of mobility. I would say that those lessons learned are still prevalent today. Smaller units, speed and mobility (not getting caught into opposing lines when possible) and a virtual armor to protect fixed positions. Where or how that comes into play is better left to the people in the know, working that problem.
For your basic grunt, these are super scary times.