An independent report on the care and training of military recruits is expected to say there have been significant improvements in standards.
It is the second independent report into the care of military recruits
The last Adult Learning Inspectorate report found one in 10 young service personnel was suffering from bullying.
Its new report to be published later will show how the armed forces have responded to the criticisms.
The highly critical 2005 report was commissioned after the deaths of four soldiers at Deepcut barracks in Surrey.
It was the first assessment by an external body of the care and training of recruits.
It found some living conditions were unacceptable, with many barracks no better than slums, and said the storage of weapons could be lax.
The risk of bullying, self-harm, injury and early drop-out by recruits at armed forces' training centres was "too high", it said.
"Much of this is condoned as 'traditional', even though it is officially forbidden," it said.
"The newest recruits, women and people from minority ethnic groups are particularly vulnerable."
As part of its recommendations, the report urged training to be "better managed, better organised and better controlled".
At the time, Armed Forces Minister Adam Ingram welcomed the report as an "independent and wide-ranging" review of training and said the information would be used to raise standards of all defence training establishments.
Tuesday's report is expected to show that significant improvements have been made in some areas.