These are relevant references from the Books where Martial Law is mentioned.
I make no pronouncements on these matters, but report them as I find them.
Arrive at your own conclusions.
I wish you well,
The officer continued; "Marlenus lost the Home Stone, the Luck of Ar. He, with fifty tarnsmen disloyal to the city, seized what they could of the treasury and escaped. In the streets there is civil war, fighting between the factions that would master Ar. There is looting and pillaging. The city is under martial law."
Tarnsman of Gor Book 1 Page 102
"The city is under martial law," I said. "Why is it not being administered from the central cylinder, or its arsenal?"
Mercenaries of Gor Book 21 Page 142