A Forest of Eagles — James Follett

At long last a follow-up to the best-selling A Cage of Eagles
It is now 1942 and the quickening pace of the war brings new problems for the senior German officer, U-boat ace Otto Kruger. The PoW officers under his command at No. 1 PoW Camp (Officers) Grizedale Hall in the Lake District are becoming increasingly impatient with his autocratic regime, which forbids all escape bids unless they've been properly planned. The stories range from the grim to the tragic to the bizarre.