Maine native Tom Huntington’s latest book, “Maine Roads to Gettysburg,” looks at the soldiers who made their presence felt all over the battlefield during three days of fighting in July 1863.

There’s Oliver Otis Howard, corps commander who helped secure high ground for the Union on the first day. There’s Adelbert Ames, who drilled the 20th Maine regiment, including Brig. Gen. Joshua Chamberlain, into a fighting regiment and then commanded a brigade at Gettysburg.

The 17th Maine fought ably in the confused and bloody fighting in the Wheatfield on the second day, the 19th Maine helped defeat Pickett’s Charge, and Chamberlain’s men made their legendary stand at Little Round Top.

Tom Huntington tells their stories and many more.

Huntington is the author of “Searching for George Gordon Meade: The Forgotten Victor of Gettysburg,” and “Guide to Gettysburg Battlefield Monuments,” “Pennsylvania Civil War Trails” and “Ben Franklin’s Philadelphia.”

He is former editor of American History and Historic Traveler magazines, and his writing has appeared in many publications, including Smithsonian, Air & Space, American Heritage, British Heritage, and Yankee.

He was born in Augusta, Maine and lives in Camp Hill, Pennsylvania, not far from Gettysburg.