The United States has never won a MAJOR conflict ON ITS OWN for hundreds of years, indeed even the war of independence relied on expert French siege troops to defat our forces, that's why they make such great movies to distract people from the rather unpleasant truth
, It always needs allies to do the hard stuff, However it must be stated with absolute clarity American soldiers are brave couragous and competent warriors. Though I do admit to having a giggle when they got their asses completely whupped in Somalia when an entire Marine Expeditionary force got routed by a bunch of bandits in pickups
A bit like the last time the Americans tried to fight the Brits and Commonwealth and ended losing their Capital. Still its good we are on the same side the Americans are generally food people.