He was a member of the United States men's national under-20 soccer team at the 1997 FIFA World Youth Championship.
Growing up, Napoleon played for the FC Delco youth club and graduated from Neshaminy High School in 1995.
In 2002, Napoleon remained with the Timbers, going on loan to the Dallas Burn on July 13, 2002, for a U.S. Open Cup game.
In August and September 2002, he went repeatedly on loan to the Colorado Rapids, but never entered a league game.
In 1998 and 1999, Napoleon played for the United States men's national under-23 soccer team as it prepared for the 2000 Summer Olympics.