Ukraine
Malcolm Nance should seriously re-examine Tet Offensive and the extreme, vicious, nasty street-to-street, building-to-building firefights, hand-to-hand fighting between U.S. troops and VC guerillas/NVA soldiers that lasted from late January-mid/late March 1968 in cities all across South Vietnam we had to clear up in places like Saigon, Hue, Danang, Mekong Delta, Camron Bay and in rural hamlets all across the countryside. That was the offensive that effectively ended any illusion we were winning the war and that the conflict would perpetually stale into stalemate and that any decisive U.S. military victory was unlikely.
Then there was the bloody, months-long Pyhrric U.S. victory with the siege at Khe Sahn, then Hamburger Hill, in 1970. We dropped more bombs, ordinance on North Vietnamese cities like Hanoi, Haiphong for close to a decade via Operation Rolling Thunder and Linebacker I and II December 1972 Christmas bombing raids then we did on Nazi Germany during WWII.