Most of the "lore" behind the Corcorans developed post Korea and during the STRAC period (Stratigic Reserve Corps). Which lead to the "he's a STRAC troop" phrase.
That lead to all the things like "How many eyelets on a pair of jump boots?" "24, one for every hour an Airborne Trooper works in a day."
One boot is missing from the link above. The 48 pattern boot. They were the replacement for the 43 double buckles. The 48 pattern boot looked real close to jump boots except how the heel was cut and stitched and no holes on the toe cap. A lot of the pictures from the Korean War may look like they are wearing jump boots but if it is a non airborne unit they are most probably pattern 48's.
Link to more info on the 48 boot - also covers the change to black and the term "Brown Boot Army".
https://olive-drab.com/od_soldiers_c...sset_boots.php