User blog comment:Sergei Alexi Borichinov/Space War! - UNSC Marines vs. Imperial Guards!/@comment-10190509-20130818035423/@comment-108.124.34.133-20150111004137

thats too bad ... i was in basic training when you posted this battle .. so ill just state why i think the marines  would win which is that they have their own airforce as in a air wing like the modern USMC does and the IG for  all  their might on the ground have to rely  on the Imperial Navy for air support. so the marines can distroy them from the air. because as we all know you can't effectively deploy ground forces without air support. the marines have the IG alone don't so realistically the Marines win aginst the IG alone .. now if the Imperial Navy showed up it would be the oppsite way. because dispite UNSC aircraft being superiorly designed compared to the Imperiums aircraft which look like ww2 aircraft with jet engines. and the UNSC has shielded fighters capable of both atmospheric & exoatmosperic flight, the marines lack the numbers to take on the Imperial Navies aircraft.