The Boys of Iwo Jima
The author of this story is Michael T. Powers. It is published on his website and has also been reprinted in several books including Chicken Soup for the Grandparent's Soul.
You can read the story by clicking here.
Additional info about the story and the versions that circulate the internet can be found at Snopes.com and TruthorFiction.com which also includes some photos.
More information about the United States Marine Corps War Memorial can be found by clicking here.
The statue was inspired by Associated Press photographer Joe Rosenthal's Pulitzer Prize winning photograph of the flag-raising. You can view the photo by clicking here.