This is a logical place to begin a new paragraph, as Revised Standard Version, Good News Translation, and Contemporary English Version do.

Here all his servants quite clearly refers to Holofernes’ advisors—his staff.

He gave orders to do as they had said may be rendered “he gave orders to carry out their plans at once.”

Quoted with permission from Bullard, Roger A. and Hatton, Howard A. A Handbook on Judith. (UBS Helps for Translators). New York: UBS, 2001. For this and other handbooks for translators see here.