The island of Dr. Moreau

"Overseas edition for the Armed Forces. Distributed by the Special Services Division, A.S.F., for the Army, and by the Bureau of Naval Personnel for the Navy. U. S. Government property. Not for sale. Published by Editions for the Armed Services, Inc., a non-profit organization established by the Council on Books in Wartime." -- cover
 
This book is one of the many titles printed by the  Council on Books in Wartime for American service members during the Second World War. The books were distributed to soldiers as entertainment. They were designed to be light and to fit into the pockets of a soldier's uniform.