In the red-light district of Gunung Anta, along the elevated railway line in Kebon Pala, Jatinegara, East Jakarta, at midnight one day last week, First Private Marjo was on duty as usual. He was not defending the nation, alas, but collecting “room and security fees” from street prostitutes working the area. “It’s my off-duty job,” said Marjo, which is not his real name.

Marjo, 26, a member of an army engineering unit,