Massu allegedly traded army loyalty for amnesty of Algerian war officers

Evidence

It has often been alleged that, in the wake of the devastating riots that shook Paris in the May of that year, the loyalty promised by Massu (then commanding the army in Germany) was made conditional upon an amnesty for all his fellow-officers still atoning for sins committed during the Algerian war. — Horne, Alistair, A Savage War of Peace- Algeria 1954-1962, 1455

Categorization

• QUESTION: Is the amnesty-for-loyalty exchange historically verified, or still only allegation? Worth chasing in secondary sources.
• XREF: connects to: De Gaulle sacked Massu over a press interview that criticized his Algerian policy.

Related

• De Gaulle sacked Massu over a press interview that criticized his Algerian policy. (similarity 0.92)
• Algeria’s top army commander publicly pledged to disobey de Gaulle (similarity 0.78)