Did the Union or confederates have more men in the Battle of Shiloh?

In the Battle of Shiloh, which took place in April 1862, the Union forces had more men than the Confederates. The Union army, commanded by General Ulysses S. Grant, had approximately 63,000 troops, while the Confederate forces led by General Albert Sidney Johnston and General P.G.T. Beauregard numbered around 40,000. This numerical advantage played a significant role in the battle's outcome, despite the intense fighting and high casualties on both sides.