General aviation student pilot reported a traffic conflict with a military aircraft when turning final on a visual approach at a non-towered airport during a training flight. The military aircraft position and performance did not allow time for an evasive maneuver to avoid the conflict.

Narrative

While established on the final approach segment and cleared to land on Runway 13; I observed Aircraft Y approaching rapidly from my left side. The aircraft crossed directly in front of my flight path at less than 100 yards lateral separation and at approximately the same altitude. Aircraft Y then executed an abrupt right turn with an estimated 90-degree bank angle directly ahead of my position. This maneuver was unexpected; created an immediate and significant traffic conflict; and posed a serious hazard to the safety of flight given my established position on final approach. It appears that Aircraft Z and Aircraft Y were coming from the north west off a training route. Aircraft Z turns south of the final approach course of BAZ not conflicting with any aircraft. Aircraft Y in question deliberately parallels my flight path over taking my aircraft from behind and deliberately turns directly in front of my aircraft at the same altitude with minimum lateral separation. It appears it was done deliberate as a stunt which confirms my first belief. Regardless if it's in controlled airspace or outside of controlled airspace it's hard to see and avoid a high performance aircraft that has 4 times the ground speed and turns inside an aircraft over the FAF cleared to land and established on approach. It is understood the DOD can operate outside the FAR's and without impunity but it still doesn't make it right or safe to do so. There was no time to take any evasive action on my part.