Perkins , Leonard (L)

Unit was contaminated with an unrelated Army unit (Infantry Battalion/Artillery Regiment/Commando/Special Service Battalion) that makes no sense for Air Force personnel -- found 28 Aug 2026 while investigating a similar report (PersonNumber 30827, Janse Van Rensburg). Affects 32 "ref. 85 years of SAAF" records in total, all correctly Corps = South African Air Force but each with a different, unrelated ground-forces Unit value -- looks like a batch-import misalignment bug, not a single bad value repeated. Cleared rather than guessed at a correct Unit.
16 Sep 2026, ServiceNo contamination sweep: the stored ServiceNo 'P1/8138' was CLEARED. It was not a reading of this man's record. PersonNumbers 32464 to 32465 -- 2 consecutive records -- all carried the identical number, which belongs to the record at the head of that run (32464, Penzhorn, Gerhardt (G)). A value repeated down an unbroken block of PersonNumbers is a forward-fill import artefact, not men who shared a service number; the pattern holds across 850 such runs on this roll and is independently confirmed by Mike Sandham's research log, which attaches such numbers to the head of the run 167 times against 6 contradictions (all examined). No replacement is guessed: this man's real service number is simply not known, and a blank field says so honestly where another man's number did not.
25 Sep 2026, Unit2 service-branch sweep: the stored Secondary Unit "Navy" was CLEARED. It was not a sub-unit, it was a service-branch word, and it CONTRADICTED this record's own Branch, "Air Force". Across the roll 787 records carried such a contradiction; judged against Corps and Regiment -- independent of both columns -- the evidence backed Branch 744 times and Unit2 not once. Branch is therefore kept and the contradicting word removed. Nothing is guessed: this man's branch of service is already recorded, and his sub-unit, if any, is simply not known.