If you were looking for books on WW2, i would suggest Anthony Beevor, The Battle and the Resistance. A very good Biography of Dudley Perkins (an SOE agent) Vasili, The Lion of Crete written by Murray Elliot and lastly one that I've never seen outside of Greece, Crete 1941,Eyewitnessed, written or rather compiled by Costas Hadjipateras and Maria Fafalios