Commander Rem is the CO for the MedCenter Defense Force (MCDF) on the planet of New Holstice during the Clone Wars. New Holstice is a Mid Rim hospital world between Belderone and Roche. When a group of Mandalorians attacked New Holstice, Commander Rem's forces as well as those of Commander Bly's Star Corps Legion repelled the attack, but at great loss to their own forces in the process.

*sidenote* Commander Rem and his command are my own creation, but New Holstice was created by Dark Horse comics.
http://starwars.wikia.com/wiki/New_Holstice

http://starwars.wikia.com/wiki/Batt.....f_New_Holstice