I hope you will find all answers in this this and this answer. First of all you should add your custom button with respect of navButtonAdd . Then you should set the filter with respect of postData and search:true parameters of jqGrid and trigger reloadGrid .
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.