Shiloh is one of the nation's oldest and best preserved battlefield parks. In the late 1890s, returning veterans used more than 150 monuments, 200 cannon, and 650 historic tablets to "suitably mark" the 4,000 acre site of their most important engagement. Overlooking Pittsburg Landing on the west bank of the Tennessee River, Shiloh was the scene of the first major battle in the Western theater. The April 6 and 7, 1862 Battle of Shiloh involved about 65,000 Union and 44,000 Confederate troops, and resulted in nearly 24,000 casualties. Shiloh proved to be a decisive victory for federal forces, enabling their advance on the important railroad junction at Corinth, Mississippi, one month later.