His documentaries rival some of those I have seen done by professional organizations.

The Battle of Midway 1942: Told from the Japanese Perspective (1/2)

Link to video: https://youtu.be/Bd8_vO5zrjo

Attack on Pearl Harbor 1941

Link to video: https://youtu.be/f6cz9gtMTeI

Sadly he seems to have went silent since the Midway video was his last upload and it is over a year old but there are other videos that are just as well done.
Montemayor's YouTube channel: https://www.youtube.com/channel/UCX7...LSvqbVQ/videos