A flag and pole mounting assembly for attaching a flagpole to a vehicle includes a middle shaft extending substantially between two sidewalls of the vehicle and adjustable endshafts for extending the total length of the mounting assembly. Posts at each end of the middle shaft engage with stake pockets located in the two sidewalls of the vehicle. A flagpole attachment member couples to the middle shaft and defines a cavity for receiving and securing the flagpole to the middle shaft. A light source connected to the flagpole attachment member illuminates the flagpole or an associated flag when the flagpole is coupled to the flagpole attachment member. A solar panel or other power source is electrically connected to the light source for powering the light source. The mounting assembly may only utilize one stake pocket or may engage with the sidewalls of the vehicle without use of any stake pockets.