You could use the netpbm tools to do this pretty easily. Generate an image of the same size as the GIF using pbmtext or GhostScript, and convert the GIF to ppm with giftopnm. Then, combine the two to produce a new image using pnmarith, pbmmask/pnmpaste, ppmmix, or similar.
Then convert the result back to GIF with giftopnm. Edit Sorry, I missed the iOS tag; I assumed the questioner wanted a server-side solution. Indeed, this approach wouldn't work on an iPhone.
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.