A good lesson from WWII.
Something not well known was that Mussolini’s Italy had some of the best fighter aircraft in the world. Faster, more agile, and more heavily armed than its British or American counterparts.
However, they had one flaw. Maintenance. They needed a lot of it, and frequently, even in good conditions. Sent to North Africa, however, they were one of the best aircraft in theater that only rarely left the ground. So the end result was the much more simple to maintain Allied aircraft were all that mattered.
Flying Fiats.