Mars is in Capricorn right now and it's pretty comfortable there. This fire and earth combination seems odd but Mars is exalted (works really well) in this sign. Capricorn is a Cardinal self starter which blends well with Mars "Let's go!" attitude. Capricorn's structure channels the energy of Mars into something more focused.
Think ambition, low-key determination, self-control, strategy. If Mars in Sagittarius is the warrior, Mars in authoritative Capricorn is the General.