Milliman spent last season as the assistant offensive coordinator of the Rochester Institute of Technology. He helped guide the Tigers to a 15-3 record earning the Empire Eight conference championship and their first Division III NCAA appearance since 2000. Under Milliman's guidance, the Tigers finished out the 2006 campaign ranked fourth nationally.
"We are excited to welcome Peter into the Siena lacrosse family" said head lacrosse coach Brian Brecht. "He brings a wealth of knowledge from his professional playing career and collegiate coaching experience. Peter is a valuable asset to our program. There is no doubt he will make significant contributions in bringing Siena lacrosse to new heights."
Milliman, a three-time All-American at Gettysburg, helped lead the Bullets to four straight NCAA tournament berths. Currently, Milliman stands second all-time in career points at Gettysburg with 232. In his tenure, Gettysburg earned four Centennial Conference championships with a 38-0 conference record over four seasons. Milliman was named First Team Centennial Conference three times.