For the code, take out everything before the "=" to have it embedded. Now to criticize...

I love this history regarding military technology, so I'm a little more critical than most people probably are. Try not to take it harshly. I'm not bashing you or anything, just telling you what seems to be wrong from my perspective and what you could probably improve on. Also, it's hard to voice all my criticism in a post. It would be much better if I could do it over a vent or voice chat...but I digress. I'll do the best I can.
For starters, your voice (or whoever's voice it is) is very monotone/monotonous. Add variety to it. Documentaries are informative in nature and there are only so many ways you can make it more interesting. One of those ways is through the person who is narrating. I'd suggest someone with a better voice. Also, with a good voice you need a voice that is confident. The narrator came across a little weak to me. There were parts in the video where he stumbled or slowed down because he either got lost or was saying too much in one breath. On a lighter note, the person did a good job. It's not easy narrating a documentary and it takes practice. Know the material through and through and practicing it will help make the narration go more smoothly and professionally.
The video itself is the brightest spot. It was put together nicely and matched the narration well. The only thing I could find wrong was that there were long pauses. Those long breaks didn't seem to fit. Also, if you want to break up things in a documentary, make sure you put text in the pause to explain what will happen next...something like "The Aircraft carrying coming into its own" or "The Aircraft carry and World War II." These help the audience better understand what you are going to do next. But overall, the video was great. The pictures and video came out well. That's the strongest point of the documentary by far.
As for the presentation itself, it was average. There are a lot of changes I would make you the wording you use and the points you make. Could I ask to see the transcript for the documentary? I'd like to edit it and give it back to you in an attempt to improve the video. Let me know.
Overall: Good documentary, but it can use quite a bit of a improvement.