A Million Shades of Grey by Cynthia Kadohata

This is the UK cover from Simon and Schuster

This is the US cover

This story opens in 1973 in the Highlands of South Vietnam. The war is all around the village of Y'Tin but somehow his family are going on with their daily lives. Y'Tin's father is working for the US army as a tracker and his son has this skill too but all Y'Tin wants to do is look after the elephants - especially Lady. Jump forward to 1975. The US army have left and Y'Tin is now an elephant keeper but the war is not over and there are discussions among the adults about the desperate need to leave before the soliders from the North and the Viet Cong arrive. Then comes the terrible day when the soldier do come and T'Tin and his friends are captured. He desperately hopes his mother and father and two sisters have escaped. The following few days are utterly dreadful. People from his village are shot; their houses are burned down and the boys from the village have to dig huge grave pits. Somehow though, Y'Tin and a friend do manage to escape and deep in the jungle they are reunited with their elephants. Sadly though, there is more trouble ahead. 

You can read the blurb and a book extract on the publisher page. And here is the author page. A Million Shades of Grey was published in 2010 but it is still available.  I also found this list of five middle grade novels also about the Vietnam War. If you select the label either Vietnam or Vietnam War from this post you will find some picture books that are well worth exploring too. 

A fascinating window into post–Vietnam War history and a wonderfully intimate character study. Kirkus

Though the setting might be unfamiliar to young readers, Kadohata does a good job describing it without overloading her narrative with political details. Y’Tin’s inner monologues make it easy to sympathize with his character and to understand the events in his life. ... some of the more violent scenes and allusions to war crimes might be difficult for readers ... Historical Novel Society

If you have students in your school studying the Vietnam War then this book should be added to their wide reading book list. It gives another perspective on that conflict and is set just after the US army have left and the North have begun their invasion. Reading this book (for ages 11+) will take some reading stamina because the action doesn't really kick in until around page 75.

If you are interested in reading other books about care of elephants and the special bond that forms between these huge creatures and humans look for these:

The Magician's Elephant

The what on earth institute of wonder

The Elephant in the Room

The Great Elephant Chase

Singing with elephants

The Girl who Stole an Elephant

I picked this book, A million Shades of Grey, in a library because I previously enjoy two other books by Cynthia Kadohata - Kira-Kira and Weedflower. A couple of years ago I read this one:

Half a world away