When War Came Again

He seemed thinner than Harry remembered, still boyish though he must now be nearly forty: formerly Lieutenant 'Bunny' Andrews, leaning on a walking-stick with his smile and genuine delight at shaking the hand of his one-time Lance-Corporal, Harry Cardwell.
Their War To End All Wars had happened long ago. Twenty years later they still lived with its echoes, shadow, loss and nightmare in their minds and bodies. So why and how could they now be meeting as volunteers in another war?
'We are grown men,' said Bunny. 'We should be cultivating our gardens.'

When War Came Again is the third volume of six in the Harry and Annie Series which started with Love Of an Unknown Soldier.