I thought I'd throw all my named objects which had serial numbers and hope for the best. If you have any idea how to research it further, please let me know:
I used the printer for most of these things, and I have to say the results are pretty good.
First up we have the World War 1 item: An American canteen(More pictures in this thread: My only WWI item: US Canteen ):
As far as I can see, it says:
American WW2 leggings:
American USMC dogtags, I believe one is postwar:
Then for the British stuff:
Named medal, I believe it was issued to an Indian soldier:
12044 SWR.KIRPAL SINGH, R.DECCAN HORSE.
R.A.F grouping(Details here: My British Medal Collection ):