Charles Spurgeon Commentary Mark 15:15-16

"And Pilate, wishing to content the multitude, released unto them Barabbas, and delivered Jesus, when he had scourged him, to be crucified. And the soldiers led him away within the court, which is the Praetorium; and they call together the whole band." — Mark 15:15-16 (ASV)

And so Pilate, willing to content the people, released Barabbas unto them, and delivered Jesus, when he had scourged him, to be crucified. And the soldiers led him away into the hall, called Praetorium;

The guard-room of Herod's palace, where the Praetorian guards were accustomed to gather.