Californios getting ready to charge. Photo by Stuart Resor.

Kearny's best. Photo by Stuart Resor. Volunteers. Photo by Stuart Resor.

U.S. troops heading into battle. Photo by Stuart Resor.

Park volunteer in 1846-period attire.

Mounted Californio. Photo by Stuart Resor.

San Diegans watching the re-enactment.

The man of the hour: Leroy Ross. Photo by Stuart Resor.

Much of the battle was fought at close range. Photo by Stuart Resor.

Visitors of all ages learn while enjoying Battle Day.