Full Texts on Google Books (And other web Sources) - Out of copyright & Complete only.

Not exactly WW2, but a worthy resource if you are interested in the Indo-(Sino)-Pakistani conflict:

Official 1962 War History

http://www.bharat-rakshak.com/LAND-FORCES/History/1965War/275-War-History

http://www.bharat-rakshak.com/LAND-FORCES/History/1971War/280-War-History-1971.html

If you experience difficulties following the links, google "Official History Indian Forces 1962", "Official History Indian Forces 1965", and "Official History Indian Forces 1971", and open the corresponding results in cache mode; that should allow access to the downloadable PDFs.