Armand believed that a direct message had come to him from heaven to save his beloved.
Therefore he forgot his promise--his oath; he forgot those very things which the leader had entreated him to remember--his duty to the others, his loyalty, his obedience.

Jeanne had first claim on him.

It were the act of a coward to remain in safety whilst she was in such deadly danger.
Now he blamed himself severely for having quitted Paris.

Even Percy must have thought him a coward for obeying quite so readily.

Maybe the command had been but a test of his courage, of the strength of his love for Jeanne.
A hundred conjectures flashed through his brain; a hundred plans presented themselves to his mind.