Teenagers don't want the plaque. Give them the field.

Quick answer: Give each teenager one real soldier to follow. Make them walk at least one stretch of ground instead of driving past it. Cap the day at three stops. Everything else is logistics.

Start with a name

A battlefield is a lot of grass, and a teenager sees that fast. A monument that reads "2nd Brigade, 3rd Division" means nothing to him. A man who was nineteen does.

Before you leave, have each kid pick one soldier. The National Park Service keeps a free Soldiers and Sailors database online, searchable by name and regiment. Pick a regiment that fought at the place you're visiting, then let your kid choose a private from the roster. Not a general. Generals are in the books already.

Now the day has a thread. Your son isn't touring Antietam. He's finding out where his man stood on the morning of September 17, 1862, and whether he walked off that field.

You'll be surprised how often a kid who ignored the museum will stop at a regimental marker and read every word, because he's looking for his guy.

Walk the distance

Driving a battlefield tells a teenager nothing about it. Walking it tells him everything.

At Gettysburg, park on Seminary Ridge and look across at the small clump of trees on Cemetery Ridge. It's about three-quarters of a mile of open ground. Walk it at a normal pace and don't talk much. It takes a while. Then mention that on July 3, 1863, thousands of Confederate soldiers crossed that field in heavy uniforms, carrying rifles, with artillery and rifle fire coming at them from the ridge ahead.

You won't need a speech after that.

Antietam works the same way at the Sunken Road, which the soldiers called Bloody Lane. Walk the lane, then climb the observation tower at the end and look back at the ground the attackers crossed. It was the bloodiest single day in American history, and from the tower you can see why it was so hard to leave that field alive.

Stay on the paths and off the monuments and cannon. Federal battlefields are protected, and you'll want your kids to learn the difference between walking a place and climbing on it.

Pick ground that fits your kids

You don't need to see everything. Pick one.

• Gettysburg, Pennsylvania. The best first trip. The ground is dramatic, the story is easy to follow, and the town is built for visitors. Little Round Top gives teenagers a hill to scramble up and a story worth the climb, the 20th Maine and Colonel Joshua Chamberlain.
• Antietam, Maryland. Quieter and much less developed. Good for kids who find crowds draining. It looks a lot like it did in 1862.
• Vicksburg, Mississippi. A 47-day siege that ended on July 4, 1863. The USS Cairo, a Union gunboat sunk by a mine in 1862 and raised in 1964, is on display and holds a boy's attention longer than most things in a museum.
• Fort Sumter, South Carolina. You get there by boat from Charleston. The war began here on April 12, 1861, and a ferry ride is an easy sell to a teenager.
• Appomattox Court House, Virginia. Lee surrendered here on April 9, 1865. It's small and quiet and makes a good last stop on a longer trip.

Pair this with the routing rules in Three hundred miles a day, and other rules for driving with kids if the drive to the battlefield is long. A tired teenager at 4 p.m. is a lost cause, however good the site is.

Hire a guide once

If you spend money on one thing, spend it here. At Gettysburg, licensed battlefield guides will ride in your own vehicle and drive you through the park on a roughly two-hour tour. Book ahead in summer and fall.

When you call, say you have teenagers and ask for a guide who's good with them. The good ones tell stories, and the stories are accurate. They also answer a sixteen-year-old's questions without talking down to him. A bad one recites troop movements.

Don't want to pay? The park's ranger programs are free and often excellent. Check the schedule when you arrive and plan around one.

Three stops, then lunch

The mistake is trying to see the whole park. Plan three stops a day, and one of them should be the visitor center, ideally first. Watch the orientation film and see the museum before you head out. Then everything you drive past makes sense.

Eat away from the field. A battlefield at noon in July has almost no shade, and a hungry teenager gets short with everyone. Pack water, hats and snacks in the car, and stop for a real lunch in town. Sit down, put the phones away and let your kids tell you what they've noticed. If your wife's along, How to plan a trip your wife actually wants to be on is worth ten minutes before you build the schedule.

Download offline maps before you go. Cell coverage at some battlefields is thin, and you don't want to be lost with a car full of bored kids.

Don't skip why they fought

Teenagers can smell a sanitized story. Give them the whole one.

Slavery was the cause of the war, and the Union men who died on those fields ended it. That's worth saying out loud, standing on the ground where they did it. Kids who are told the truth plainly, by a parent who respects what the soldiers gave, tend to take it seriously.

At Gettysburg, walk into the Soldiers' National Cemetery, where Lincoln spoke on November 19, 1863. Have one of your kids read the Gettysburg Address aloud. It's about 270 words, so it takes two minutes. Nobody will need to ask them to be quiet afterward.

Rules of the ground

A few things worth telling your kids before you arrive:

• Taking anything from a federal battlefield is against the law. That includes bullets, buttons and "just one little relic." Metal detectors are banned.
• Pick up any trash you see. Leave the place cleaner than you found it.
• Keep your voices down near the graves and the memorials. These are burial grounds.
• If your kid wants a souvenir, buy it in the museum shop. The money goes back to the park.

The drive out

Don't ask your teenager what he learned. That question gets one word back.

Ask whose name he's still thinking about. Then listen.