"The big question here is whether he acted alone or this is the tip of an iceberg."
In total, he is facing 17 charges.
There's been a 35 percent rise compared with two years ago.
But it could happen, and we shouldn't be complacent, Kiwi war journalist Jon Stephenson says.
The Defence Force received a $20 billion upgrade plan last year.
The Defence Force has been fined almost $300,000 for Zachary Yarwood's death.
There have been complaints of bullying, harassment and assault.
The survey showed 92 percent agree that NZ has a moral obligation to support its service people and their whānau.
The program was leaderless for years.