My son introduced me to the interesting YouTube channel, Ahoy. While the primary focus of these short videos are computer gaming, the channel also does a look at many iconic firearms used by the militaries around the world.
I particularly liked those on the Thompson, the M1 Garand and the M1911 – all extensively used by the US military during World War II. If you visit the National World War II Museum in New Orleans, Louisiana these and many other arms used during World War II are on display.
If you are interested in military history, you may find some of the videos on this channel of interest.