When pronouncing the word 'Combine', vocal stress is placed on the first syllable. The reasons behind the Combine's imperialism including their ultimate goal, remain unknown throughout the series.
This process results in a highly mobile, aggressive, and adaptive military force which is able to respond to any threat and eliminate any opposition posed by a planet's inhabitants. By manipulating these species through methods including bioengineering and implantation, the Combine creates races of physically superior super-soldiers uniquely adapted for the particular environments of the conquered worlds. The Combine empire expands by invading worlds and exploiting their resources and species as it sees fit. The Combine empire spans multiple parallel universes, is inhabited by an unknown number of sentient species, and is possibly governed by a race of artificially evolved Advisors of the Combine Overworld.
