Dennis St. John

Dennis St. John
Allegiance	Terran Confederation
Service/branch	Terran Confederation Marines
Rank	Major
Relations	Ian St. John

Dennis St. John was Ian St. John's older brother and a Major in the Terran Confederation Marines. Dennis was commanding his first post, a Marine base on a backwater colony, when the Kilrathi arrived and killed everyone.

References

Source: WC CIC Encyclopedia