a 4,000 strong mobile column amounting to around 400 vehicles, and a massed military bands and pipe bands contingent numbering around 1,200 musicians, awaits the arrival of the President, as the Prime Minister, who also serves as Minister of Defence concurrently, and the Principal Staff Officer of the AFD/BAF, usually a lieutenant general, both arrive at the parade grandstand in the center of the grounds together with the service commanders and commanding officers of the law enforcement services, together with ministers of the state cabinet, including the Minister of Liberation War Affairs, the Speaker of the Jatiya Sangsad and MPs, the Chief Justice of the Supreme Court of Bangladesh, the Attorney General, living veterans of the Liberation War of 1971 and family members of those killed in action and deceased veterans, chairmen of state agencies and defense sector firms, the general public, representatives of state and private industries and veterans of the armed forces and law enforcement organisations are stationed in between the major dignitaries who are stationed in the central grandstand. One battalion at the center of the formations assembled carries the National Standards (the Flag of Bangladesh with the gold fringe and the Bengali title of the unit) which serve as the principal colour of all Armed Forces formations, while each of the other battalions sans the first three, which are massed colour guard battalions, have 15 colour bearers at the front of their units. At 10am the massed bands' fanfare trumpeters and trumpeters sound the presidential fanfare, signalling the arrival of the President, escorted by an Army mounted squadron and escort motorcycles of the Police. As the President leaves his vehicle, he is greeted by the important dignitaries and upon arriving at the central grandstand the Parade Commander, usually an Army major general, leads the parade in rendering a full presidential salute as while the national anthem Amar Sonar Bangla is played by the Massed Bands alongside the firing of a 21-gun salute. As the music ends, the parade executes order arms, following this the PC informs the President of the readiness of the parade for the review. Both, together with aides-de-camp (one each from the Armed Forces and Police) and the PSO, ride an open-top Land Rover to inspect the parade formations. Upon approach of the parade formations the massed bands, under the baton of the Senior Director of Music of the Armed Forces (usually a