The Ariete Group, or Cantaluppi Group from the name of its commander, underwent notable transformations during and after the retreat from El Alamein, however its initial composition was as follows:
-Comando Divisione Ariete (Hq Ariete division)
--66º Reggimento Fanteria "Valtellina" (two battalions Divisione "Trieste")
--12º Reggimento Bersaglieri (two coys Divisione "Littorio")
--Resti dei Gruppi Esploranti Nizza e Monferrato (armored cars ???? 12)
-CXXXII e CXXXIII Gruppo Artiglieria Corazzata (less a battery)
The battlegroup cooperated with the German 90th Light Infantry throughout the retreat from Egypt to Tripolitania. The unit then stopped at el-Agheila on November 22nd, and on November 25th, it was reached there by the order to disband the 132nd Ariete Armored Division. The Cantaluppi Group continued to operate as the only Italian armored force within the ranks of the Italian First Army until the Centauro Division was formed on Tunisian soil. As of December 25, 1942, the Group had a strength of 22 M tanks, 12 armored cars, 3 companies of truck-mounted infantry, 7 47/32 anti-tank guns, and 4 20 mm anti-aircraft guns.
all the best
Maurizio