Liz Emeny was filling in for Helen Dexter while she was on maternity leave, but Dexter returned to the animal sanctuary in October.
Emeny's new role at the Leeds-based SWWEC will see her take responsibility for raising the centre's profile as a major resource for WWII memorabilia.
She described the centre as ‘an important part of our heritage' and said she would be planning activity to ‘raise much-needed funds'.
As well as collecting diaries, photos and letters for use by historians and researchers, the centre also works with schools to help children learn about the war.
Meanwhile, Battersea Dogs and Cats Home has taken on Lucinda English in the role of comms manager. She had been freelancing at the South London home for the past year, and has now taken a permanent position.
The institution made showbiz headlines last month when miniature models of celebrity pets - made by Japanese artist Sinco using hair collected from rescued animals - were auctioned on eBay to raise funds.
Tiny replicas of Geri Halliwell's shih-tzu and the Blue Peter Labrador both featured in the sale.