Online Loss Report Database?

[Coochycool]

I'm hoping some kind soul can point me in the right direction in the research of air losses.

For example when visiting CWGC cemeteries, often its plain to see related deaths where whole crews are laid to rest beside each other. One is left however in the dark as to the circumstances of their demise, and I wondered if there are any online resources which would detail the nature of the accident from the crash date/crew names?

Thanks in advance