Guadalcanal

Guadacanal is an island somewhere in the Pacific Ocean, and was part of Japanese territory in World War II. When Starscream was kicked out of the Decepticon Base, he was cast out here, by Lazerbeak. There, Starscream found remnants of old WWII vehicles, and Starscream, muttering "I'll make my own army", started fixing them up. Later, with some personality componets he "borrowed" from the Decepticon Detention Center, he created the Combaticons.