# Submarine Warfare (1946)

In this documentary we get a glimpse into the world of submarines and have access to rare archive footage. From the first attempts during the American Civil War to WW2 and the nuclear subs of today, the history of the submarine has been fraught with difficulties. Watch on RetroFlix: https://retroflix.org/submarine-warfare-1946/

- Kind: Feature
- Year: 1946
- Archive: [Internet Archive](https://archive.org/details/submarine-warfare-1946)
- Licence or status: [Public Domain Mark 1.0](https://creativecommons.org/publicdomain/mark/1.0/) (as the archive states it)
- Who can watch: Teens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

Not offered: its uploader marks it public domain, and the US Copyright Office's records do not settle that it is (a record that may be another film's, a film first published abroad, a year when renewal was automatic, or a country they do not name). Unclear is not offered.