Josiah Grout served in the Union Army during the American Civil War, rising to the rank of major. After the war, he was admitted to the bar and held various positions in public service, including serving in the Vermont House of Representatives and as Speaker of the House. He also served in the Vermont Senate and as governor, during which he focused on educational reforms and managed military deployments during the Spanish–American War. Grout's career reflects a blend of military leadership, legal expertise, and public service.

Josiah Grout's political career reveals a unique blend of military experience and educational advocacy, with a strategic focus on regional interests. His military background and dispatch of troops during the Spanish–American War juxtapose his legislative emphasis on enhancing Vermont's educational system. Grout's approach often shows an unexpected alignment with opposing factions, suggesting a highly localized and calculated political strategy. His ideological agility is evident in how he balances military readiness with educational advancement, leaving a nuanced legacy that invites deeper inquiry into his policy motivations.