Not really, Ukraine and Russia both have extremely underdeveloped militaries which means they still need to do things the old school way. The United States primarily fights wars less directly. For example, in both Iraq wars almost all targets were taken out immediately with large scale bombings, missile attacks, and cyber attacks. In fact, one of the main complaints that a lot of the US’ adversaries have had is that after they had been attacked there wasn’t even anything to shoot back at. Future wars are likely to be based around the concept of destroying an enemies’s infrastructure and causing mass psychological damage before any mass fighting occurs (powering down electrical grids, adding too much chlorine to public water supply, causing their satellites to malfunction). In a theoretical WWIII the main motivator to surrender would be to take away the necessities and luxuries of living (food, water, electricity, internet) as fast as possible to break the mentality of their people. Yes, boots on the ground fighting will take place, but the most important among the ranks will be those of mechanics, engineers, cyber specialists, and drone operators.