A person with Mars in the 3rd house is very active in this environment - in contacts, in movement, in learning.
The 3rd house represents the immediate environment, contacts, concrete thinking, primary and secondary education, and short-distance travel. The person is active in their close environment. They are very mobile in this environment - in contacts, in movements, in learning.
They love to communicate and can even be intrusive. They pursue their own line of thinking. In communication, they are convincing, energetic, and sometimes too straightforward: as they say, "right on target".
At the same time, their mind is insightful, they can concentrate their thoughts and express them well.
They know how to get from a person what they need.
In addition to trips, the 3rd house also represents the mode of transportation itself, and here we can see the driving style. Accordingly, they often love fast driving, speed, but we should pay attention to the sign. But what characterizes them is a love of cars, a special attitude towards transport, and technology in general. Car handling is important - the owner of Mars in the 3rd house usually enjoys road trips and driving.
They love to learn, but they are attracted to the theory of military actions, weapons, and sports. In this area, they can be an excellent theorist. Remember the magazine "Za Rulem" (At the Wheel) from the past? They may be avid readers of such publications or military technology magazines. Although now such information can be easily found on the internet.
Mars in the 3rd house can be an indication of active brothers or sisters with a masculine character. It can also show difficult relationships with them, in the spirit of eternal competition - who is better, smarter, stronger, or if there are tense aspects to Mars, then there may be conflictual and quarrelsome relationships.
Their neighbors may include military personnel, athletes, or simply very active people.