War tale; Rich boy from manor house, maid's son, become best friends, go swimming in local river, then go off to war and things change forever.

[Aimee]

we did a book for our leaving cert but i cant remember the name, it was about two boys, one rich who lived in teh manner house and then there was like the maids son, the two boys became best friends and there is a memorable chapter where the two boys go swimming in the local river, the two lads then go off to war and things change forever???

Please help, driving me insane!

[Maria]

OK, almost certainly wrong, but it's not At Swim, Two Boys, is it?

[Lobstergirl, au gratin]

Aimee, are you still looking for this or did you find it?

[Lobstergirl, au gratin]

This isn't A Separate Peace, is it?