What early experiences influenced sousa to compose marches?

John Philip Sousa's early experiences that influenced him to compose marches included his childhood in a musical family, where he was exposed to various musical styles. His time as a musician in the United States Marine Band, where he served as a conductor and arranger, further honed his skills in writing for military ensembles. Additionally, Sousa's admiration for the precision and discipline of military life inspired him to create compositions that embodied those values, leading to his prolific output of marches.