John Mark
Mark 15:16ESV·traditional attribution

And the soldiers led him away inside the palace (that is, the governor’s headquarters), and they called together the whole battalion.

Matthew Henry Presbyterian @wholebiblehenry

Here, I. Pilate, to gratify the Jews' malice, delivers Christ to be crucified, Mar 15:15. Willing to content the people, to do enough for them (so the word is), and make them easy, that he might keep them quiet, he released Barabbas unto them, who was the scandal and plague of their nation, and delivered Jesus to be crucified, who was the glory and blessing of their nation.

Commenting on Mark 15:15-21

John Gill Reformed Baptist @doctorgill

And they clothed him with purple,.... Matthew calls it a "scarlet" robe; and the Persic version here renders it a "red garment": it was of a colour resembling purple; it was pretty near it, and therefore so called; which is what kings were used to wear; and so in derision of him, as a king, clothed him with this mock purple robe; and which was...

Albert Barnes Presbyterian @notesbybarnes

Verse 16. Called Praetorium. The hall of the praetor, or Roman governor, where he sat to administer justice. Whole band. . (b) "the soldiers"