The red band symbolizes the period before the Revolution, a time, characterized by the struggle against the monarchy, and the British occupation of the country. The white band symbolizes the bloodless nature of the Revolution itself. The black band symbolizes the end of the oppression of the Egyptian people at the hands of the monarchy, and foreign imperialism.
Egypt's use of the Arab Liberation flag inspired its adoption by a number of other Arab states. The same horizontal tricolour is used by Iraq, Syria, and Yemen (and formerly Libya), the only difference being the presence (or absence) of distinguishing national emblems in the white band.