Symbolism in the French Revolution somewhat by region and period. The tricolore flag is derived from the cockades used in the 1790s. These were circular rosette-like emblems attached to the hat. Camille Desmoulins asked his followers to wear green cockades on 12 July 1789. The Paris militia, formed on 13 July, adopted a blue and red cockade. Blue and red are the traditional colours of Paris, and they are used on the city's coat of arms. Cockades with various colour schemes were used during the storming of the Bastille on 14 July. The blue and red cockade was presented to King Louis XVI at the
Siege of Belgrade (1789) command. Emperor Joseph appointed Laudon to replace Hadik on 28 July. At this time the emperor wrote to Loudon, "Cost what it may. I want you to take Belgrade". Loudon arrived at Semlin on 14 August, met with the outgoing commander Hadik on the 16th, and conferred with the temporary commander François Sébastien Charles Joseph de Croix, Count of Clerfayt at Mehadia soon afterward. On 28 August the Ottomans attacked Mehadia but were driven off by Clerfayt. On 30 August 1789, Laudon gave orders for his army to concentrate at Novi Banovci, northwest of Belgrade and Semlin. His plan was