The branch of North Vietnam was essential during the Vietnam War, cause Vietnam has jungles so its breeding grounds for LOTS of Guerilla Warfare and Napalm casualties if Operations Linebacker I and Linebacker II has anything to go by, their primary target, Hanoi, the future Vietnamese Capital at the time had a lot of SAM defenses, it can fuckup any aircraft that’s for sure, and to rub salt in the wound as an additional “screw you” to the US, The USAF/US Air Force forced Boeing, the builder of the B-52 bomber to become an airline manufacturer which meant after so long, 177 B-52 aircraft was built which meant one down can spell all HELL for the United States, cause of that. A number of B-52 bombers were downed by SAM fire but didn’t spell doom for the US, the smarts of the US government is in huge numbers like today, damn