There is the sample report crosstabs. Jrxml in iReport folder (%IREPORT_HOME%\ireport\samples\Crosstabs). You can use subDataset for your needs.
How to dynamically execute query under condition in Jasper Report (iReport)?(Open Source Projects forum at JavaRanch).
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.