Mars in the 10th house is considered exalted (Uchha). It gives massive power, authority, and a career in police, military, or administration.
However, Dr. Sharma provides a classic, highly practical Lal Kitab warning for this powerful placement. Because this person is naturally aggressive and authoritative, they must avoid two specific dangers: 1. The front of an officer ("Afsar ki agaadi"): Never argue face-to-face with a superior officer or government official. 2. The back of a horse ("Ghode ki pichhadi"): Never stand behind a horse (or metaphorically, never trust a dangerous, unpredictable situation from behind).
If they ignore this advice, their own aggression will backfire, and it will cost them heavily ("padegi bhaari").