As the counting of heads was completed by the morning of Sunday, Day Two of the putsch, it was painfully clear to Challe that only Algiers and its surrounding region was totally reliable; while the units committed wholeheartedly to the revolt numbered chiefly the elitist para regiments.

QUESTION: Which specific para regiments committed to the revolt, and how did their commitment compare to the regular army units' hesitation?

Horne, Alistair, A Savage War of Peace- Alge…, loc. 1378