...more or less - Flying Tigers or the AVG flew a variety of aircraft most famously the P-36 Mohawk, and P-40 Kittyhawk (though only called that in RAF service, I think)... They only ever had about a dozen aircraft in theatre and by the simple expedient of painting the spinners different colours on every mission, managed to fool the Japanese into thinking they had many more...
Read about Claire L Chenault's exploits in the book 'The Ragged, Rugged Warriors'...