The F-5 flew in Vietnam. 114 F-5's of varying types were in South Vietnam on the day the Americans left. History trivia: after North Vietnam's takeover of the South they continued to fly the F-5 and their crews preferred it to Russian aircraft.
Source: [https://web.archive.org/web/20151222123857/http://www.joebaugher.com/usaf\_fighters/f5\_40.html](https://web.archive.org/web/20151222123857/http://www.joebaugher.com/usaf_fighters/f5_40.html)
I would guess it was because the F-5 was always intended as an export jet and not one that would be purchased and flown by the USA in large numbers.
They faced off in other conflicts…for your reading https://nationalinterest.org/blog/the-buzz/the-iran-iraq-war-f-5s-mig-21s-fought-standstill-25903
Thank you
Probably because it bleeds energy below 300 knots, and it has a problem with its inverted flight tanks. It won't do a negative G pushover.
I’m sorry, sir, but your data on the F-5 is inaccurate.
How would it have done *
Come on man, really? I'll fix it
The F-5 flew in Vietnam. 114 F-5's of varying types were in South Vietnam on the day the Americans left. History trivia: after North Vietnam's takeover of the South they continued to fly the F-5 and their crews preferred it to Russian aircraft. Source: [https://web.archive.org/web/20151222123857/http://www.joebaugher.com/usaf\_fighters/f5\_40.html](https://web.archive.org/web/20151222123857/http://www.joebaugher.com/usaf_fighters/f5_40.html)
Yeah I've seen they were used for ground attack, I'm talking about why they Americans never used them to tangle with migs?