After all, gas can is my middle name. Eh, not really.
This may not be news to everyone here, but it was to me:
Some simple searches, and some detailed things you can download free.
General example 1; "Sherman Tank":
General example 2; "World War Two":
(seriously, over 54,000 texts? ... wow!)
Detail example 3; Astronaut Deke Slayton in WW2:
Detail example 4; US training aid:
(not currently politically correct, but it shows the things we tried to impart to soldiers).
Detail example 5; another old book from the era:
(it's a slide-show, too)
And lastly, what you all need and want (Bitly link for brevity):
200 issues of "The General" from Avalon Hill.
Plug in your own preferred search terms, do some filtering, and then be prepared to download vast amounts of data and files.
There's also a huge archive all the original Space Gamer issues you can download in a single large .ZIP file