Preiser does one set of German Second World War weapons and gear but that's it. Nothing Allied or anything else.

http://www.reynaulds.com/products/Preiser/56290.aspx

I think railroad G scale is 1/22 but I'm not sure on this. Maybe someone else does?

Thank you Bronto! Nice suggestion!

A lot of figures are scaled in mm.  Try searching 90mm instead of 1/24 the size might be close enough to  work for you.

Thank you for the suggestion, but they don't have any...

Not really sure about 1/24 but you might try  www.verlindenonline.com

Tracy