what is the name of the book? kids go camping come back, everyones gone, its like a 7 book series...? thanks..

"Tomorrow When the War Began" by John Marsden

http://www.amazon.com/gp/product/044021985X/ref=cm...

"Australian teenager Ellie and six of her friends return from a winter break camping trip to find their homes burned or deserted, their families imprisoned, and their country occupied by a foreign military force in league with a band of disaffected Australians. As their shock wears off, the seven decide they must stick together if they are to survive. After a life-threatening skirmish with the occupiers, the teens retreat to their isolated campsite in the bush country and make plans to fight a guerilla war against the invaders. Writing in a distinct voice and showing rare intelligence and sensitivity, Ellie recounts their courageous battles against the Goliath in control of their land. She also records her feelings and observations about the romantic partnerships that develop within her small circle of friends, and shows how they mature and blossom during this time of crisis."

[the titles of the other books of the series are on this page, too]