> In the 1990s I remember reading an account of North Korean special forces landing by submarine and trying to infiltrate ... and immediately being tripped up b

> In the 1990s I remember reading an account of North Korean special forces landing by submarine and trying to infiltrate ... and immediately being tripped up by unfamiliarity with modern technology. Actually, most of them weren't special forces. It was a North Korean submarine that was doing its routine(?) spying activity when the submarine was stuck in the shore. They had to abandon the ship, and most of them were navy soldiers with (I assume) no training in spying activity. Besides, you cannot exactly hide a submarine stuck in the shore, so of course a national emergency was declared and the South Korean military went full alert mode. Reference: https://en.wikipedia.org/wiki/1996_Gangneung_submarine_infiltration_incident https://en.wikipedia.org/wiki/1996_Gangneung_submarine_infil... In an ordinary situation, a North Korean spy agent would act much less conspicuously and have much more time to prepare for life in South Korea. (Personally, though, I don't believe they would make much difference in a full-scale war.)