Americans have equipped and trained armed forces of a large number of countries since World War 2 so all are incompetent in warfare?
South Korea and Japan - each is a powerhouse.
South Korea
Japan
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NATO is a formidable military bloc established by USA with well-trained rapid reaction forces.
NATO
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Many countries send their officers and pilots for training in USA from time-to-time.
RED FLAG and others
Eight Pakistani air force pilots, each experienced in the F-16 Fighting Falcon's A and B models, recently learned to fly the newer C- and D-model aircraft at the 162nd Fighter Wing, the international
www.af.mil
There are so many links to post but the aforementioned will do for now.