Как я понял, это просто переподчинение уже существующих отдельных танковых бригад уже существующим штабам дивизий. Даже без смены дислокации бригад.
"Armored brigades will be administratively realigned to turn the 34th Infantry Division into the National Guard's armored penetration division, but those brigades will not move from their current bases, according to Brig. Gen. Charles Kemper, the division's commander. The Army has designated the 1st Armored and 1st Cavalry as penetration divisions, with three armored brigades, in the last year as it equips for large-scale combat operations. These units are expected to receive additional capabilities as divisions return to their status..."