In brief, it concludes that the US alone (there have been lots of conflicts without any manifest involvement of the US) has been involved since WWII in conflicts causing "the deaths of between 20 and 30 million people".
[Edit] You may also consider the ongoing war in Syria, which is not only exceeding WII in duration already, but also overshadows the total death count of the US in the WWII Pacific "theatre" (161,000 dead, including 111,914 in battle and 49,000 non-battle) by 500,000+ dead (last consensual figure was 470,000, issued by the Syrian Center for Policy Research in 2016).
In brief, it concludes that the US alone (there have been lots of conflicts without any manifest involvement of the US) has been involved since WWII in conflicts causing "the deaths of between 20 and 30 million people".
[Edit] You may also consider the ongoing war in Syria, which is not only exceeding WII in duration already, but also overshadows the total death count of the US in the WWII Pacific "theatre" (161,000 dead, including 111,914 in battle and 49,000 non-battle) by 500,000+ dead (last consensual figure was 470,000, issued by the Syrian Center for Policy Research in 2016).