The Glenn L. Martin Company imaged the XB-68 aircraft as a supersonic medium tactical bomber. The XB-68 program was actually developed for the destruction purpose of the surface objects while supporting tactical operations.

The aircraft was designed for all weathers at speeds above Mach one.

The crew of the aircraft was designed to seat at a pressurized compartment, cooled with refrigeration at Mach speeds. The features of the aircraft included boundary-layer diverter, windshield defogging, detachable aerial refueling probe, single-point ground refueling, integral fuel tanks, rotary bomb bay door serving as weapon carrier combination, tip ailerons and short cord spars, dive brakes, liquid oxygen system, variable horizontal tail and two deceleration chutes. 

The design immediately ran into serious difficulties over the inertial guidance bombing and navigation system, which, had the bomber been approved for production, would have pushed deployment back to at least 1963.

None of the XB-68 prototypes were built after recognizing the fact that the medium tactical bomber design was still years away.