United States Flag Etiquette
The US Flag in a Parade

The American Flag — properly displayed in a 4th of July Parade.
Marching and Observing in a Parade
When carried in a procession, the flag should be to the right of the marchers. When other flags are carried, the flag of the United States may be centered in front of the others or carried to their right. When the flag passes in a procession, or when it is hoisted or lowered, all should face the flag and salute.
Saluting the Flag
To salute, all persons come to attention. Those in uniform give the appropriate formal salute. Citizens not in uniform salute by placing their right hand over the heart and men with head cover should remove it and hold it to left shoulder, hand over the heart. Members of organizations in formation salute upon command of the person in charge.