AURORA, Illinois--At the age of 92, Kenneth Udstad felt a sense of guilt for his actions of nearly 70 years ago.

Now, the U.S. veteran of World War II wants to return the items he took from dead Japanese soldiers and Japanese civilian homes on the Northern Mariana Islands of Saipan and Tinian.

Udstad served in the 4th Marine Division and was in charge of supplying ammunition and fuel for tanks. In the summer of 1944, he landed on Saipan for heavy fighting against the Imperial Japanese Army and Japanese civilians rounded up for the battle....