>the United States launched Operation Enduring Freedom on 7 October 2001, alongside the United Kingdom. The two countries were later joined by a large multinational force, made up of multiple NATO members and two of their major non-NATO allies, as well as Afghanistan's local Northern Alliance. The invasion effort made rapid progress for the next two months as the coalition captured Kabul on 13 November and toppled the Taliban by 17 December, after which international military bases were set up near major cities across the country.

>13 killed (including 1 CIA officer and 4 non-combat deaths)[11]

if that was not a decisive victory, then I don't know what is.

the rest of the so-called war was a low intensity insurgency during 20 years of which the US lost fewer soldiers than Russia loses in 20 hours.