Mars in Sagittarius gives an adventurous and risk-prone behavior.
People with this placement are courageous by nature. They’re curious and they have a strong will to discover new things, places or persons. From a certain point of view they may seem to lack loyalty or at least a sense of commitment, but they’re, deep down, just curious.
In business, they’re somehow reckless, always trying new ways of doing business. In some cases, they’re “evangelists”, people promoting new beliefs, or new technologies. More often than not they[re doing this with great energy, borderline violence.
As partners, they’re good as long as they are in charge. They can’t stand to take orders for anyone, and when they’re forced to it (by context, or by temporary arrangements) they do whatever they can to get out of that position as quick as they can.