Propozycja.

"Remaining survivors" gives 239,000 results in Google search.

A bit long. but it uses the idiomatic phrase "make it through," which recognizes these people's heroic effort to make it through the war.

to not die as a result of an illness or an accident
She’s made it through the worst of the illness now.
http://www.macmillandictionary.com/us/dictionary/american/ma...
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to make it through {czas.} (też: to remain, to be preserved, to subsist, to outlast)
przetrwać {czas. dk}
In order for use to reach 2020, we will have to make it through 2010 in one piece.
Aby dojść do roku 2020, musimy przetrwać rok 2010.
If we can make it through the next 150 years, I think that your great great grandchildren will forget all about Malthus.
Jeśli uda nam się przetrwać następnych 150 lat to myślę, że nasze pra- pra- prawnuki zapomną o Malthusie.
http://pl.bab.la/slownik/angielski-polski/make-it-through

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He had made it through the war, and he was, in fact, in Paris! He had gotten at job with the police at a prefecture in the eleventh arrondissement.
https://books.google.com/books?id=UhzwCgAAQBAJ&pg=PA121&lpg=...
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That's the way we made it through the war. Just as quick as we got to the point where they had enough facilities down there where they could start operating,
https://books.google.com/books?id=syZDE5pBzjoC&pg=PA285&lpg=...
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The veterans, many of whom had family with them, were there because they had made it through the war.
https://books.google.com/books?id=app-M8CcNvUC&pg=PR9&lpg=PR...
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. a black market and such private means of production as the famous 'victory gardens', the ordinary Soviet citizen would hardly have made it through the war.
https://books.google.com/books?id=4IyfYbEvSR4C&pg=PT102&lpg=...

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lives and economic livelihoods, and gives visitors the opportunity to contemplate the images of men who made it through the war but did not leave it behind.
http://recollections.nma.gov.au/issues/volume_10_number_2/ex...

vestigial - forming a very small remnant of something that was once much larger or more noticeable.

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vestigial physics dept. faculty
vestigil dept. of physics faculty