Perhaps not, but neither could the US military at the start of each of those particular wars, or any other war. It took years of buildup, training and outfitting to do so. D-Day was almost 2 1/2 years after Pearl Harbor. Different battle landscape and technology today. Think back though to the buildup during Desert Shield prior to Desert Storm. It took time to spool up for that. If that became a protracted ground war, we would have prevailed, but it would have taken more buildup in personnel, materiel and time. We can’t afford to maintain a “war time” military in “peace time”, but the technology and ability to project force in many forms still gives us an advantage.
Naturally you are right, but the problem is that WITH today’s technology and weaponry WWIII could be over before coffee was done and drunk.
The Old joke is thar we know what the weapons of WWIII will be. After that, the prime arms for WWIV will be stick and stones.