Why do we still have Infantry? With all the fire power that a modern air force can bring to the battlefield, with waves and waves of missiles and bombers etc ... isn’t spending thousands of dollars per Infantryman a bit extravagant?
Then a real war came along....
No, not a real war, a feel good, limited war was launched. Every limited action since Korea has been a disaster.
Think Faluja, then think Patton, or MacArthur, or Churchill.