Michael David Cohen:

By the first anniversary of the outbreak of the Civil War, Northerners had discovered how ill-prepared they were for a crisis. The peacetime Army had been tiny. Volunteers rallied to defend the Union, but what they brought in enthusiasm they lacked in experience. Many were too young to have fought in the Mexican War and, since most military academies were located in the South, few Northern youths had formal training in combat. To win the war, the Army had to create citizen-soldiers from scratch.
On July 2, 1862, Abraham Lincoln signed a bill designed to change that: the Morrill Land-Grant College Act, which offered federal financing to colleges that taught military tactics. When the next war began, its supporters believed, alumni of those colleges would be ready for battle. The law also required funded colleges to teach agriculture and engineering, thus preparing young men to serve their nation in both war and peace.
Since the United States’ founding, education had remained a local and state concern. Now, in the midst of the Civil War, the federal government began to play a major educational role. Indeed, while its requirements were responses to the country’s security and economic needs, the act proved to be one of the most transformative pieces of legislation in American history, seeding the ground for scores of high-quality public colleges and universities around the country.