INTO THE TREASURE-CITADEL Well might those Legionaries who had been left behind to protect Nissr and the sacred gifts have envied the more fortunate ones now sweeping into Jannati Shahr.

The rear guard, however, formed no less essential a part of the undertaking than the main body of the Legion.
This rear guard consisted of Grison, Menendez, Prisrend, Frazier, and Manderson.

Their orders were as follows: If the main body did not return by midnight, or if sounds of firing were heard from the city, or again if they received direct orders via the Master's pocket wireless, they were at once to load the machine-guns on board the liner.

They were to carry Myzab on board, also, and with the wireless spark detonate the explosive which would reduce the Black Stone to dust.
This accomplished, they were to start the engines and, if possible, make a getaway--which might be feasible for five men.

If they succeeded, they were to wheel over the city and drop the second kappa-bomb, also all the remaining explosive, by way of punitive measures.