Or just exhaustion. There's an interview with a Japanese ace Honda Minoru on yt in which he talks about how pilots were so exhausted from flying eight hour combat missions every day of the Guadalcanal campaign that they would fall asleep at the controls, slowly fall out of formation, and hit the water. They (amazingly) had no radios in their aircraft at the time, so they just watched it happen.
IIRC they did have radios but those were so unreliable due to poor quality of vacuum tubes that many pilots chose not to use them, sometimes to the point of removing the antenna mast.
The Japanese had a variety of issues with radios. Some Type 0 pilots did remove their radio system, to save weight, but only on land-based fighters. For carrier-based ships radios were still essential, because they used radio direction finding for navigation. Japanese carrier-based operations also suffered issues because they tended to use a single radio frequency for all air operations (meaning the channel could get disorganized). Japanese carriers also had their antennas on the sides of the ships rather than at the top of the island, which meant they often couldn't receive longer ranged transmissions, so it would be up to escorting cruisers to receive messages and then transmit them to the carrier. The book "Shattered Sword: The Untold Story of the Battle of Midway" has some good information about some of these nitty-gritty details.
I'm pretty sure I've read that exhaustion was a factor in the Battle Of Britain - the RAF took measures to ensure that pilots were reasonably well rested between sorties whereas the Luftwaffe just kept throwing them in again and again.
The Germans tended to put their trainers into combat roles meaning that they had trouble training new pilots. In the later days of the war they sometimes told pilots to eject if they saw an enemy plane over friendly ground - there were plenty of airplanes so better to make it back alive and try again than to risk death.
The Japanese did the same thing, toward the end of the Pacific War. It wasn't by preference in either case, but because they were so low on pilots that it became a question of whether to use instructors as combat pilots or just not have anyone to fly those missions at all.
