YA war story with brothers

it is NOT "my brother sam is dead," which is the only thing that comes up when i google it.

it was about two brothers -- possibly twins. one of them goes into war and i think dies, and the other brother takes his place and/or has to deal with it. i remember it being pretty current -- the war wasn't a long time ago. i don't remember there being many other characters other than the brothers.

Private Peaceful is about brothers during World War I.

What year was it read?
Old or new book at the time?

Looking on ACCESS PENNSYLVANIA for possibilities.

Author Bonham, Frank.
Title The ghost front.
Imprint New York, Dutton 1968
Summary Alternate chapters describe the experiences of eighteen-year-old twins, separated by an error in an English training camp, who both meet their first taste of World War II military activity in the Battle of the Bulge.
Subject World War, 1939-1945 -- Juvenile fiction.
Ardennes, Battle of the, 1944-1945 -- Juvenile fiction.
Edition 1st ed.
Descript 223 p. map. 22 cm.

that's the one! - clearly got the "it wasn't a long time ago" thing wrong ;)

thank you so much!

@ rarm helped -- "private peaceful". thank you for your help!!

Glad it's found! :) Michael Morpurgo is a good author; have read a few of his, though not that one.