Is unit speech on Age Of Empires made up?

The unit speech in Age of Empires seems like a made-up one, a kind of "Simlish" (warning TV Tropes). Is it completely made up, or was it somewhat based on a language? Some of the responses sound vaguely Latin, with the -us suffixes.

Unfortunately I cannot find any sources for the original Age of Empires, but every game in the series from Age of Empires II onwards (AoE III, AoM, etc.) have in-game dialogue based on the language of the civilization (with exception of the Atlanteans in Age of Mythology, who speak a made up language).

You can find the unit speeches and translation on the Age of Empires wiki - for example, here's the one for Britons in Age of Empires II.

Many of the words in AOEI are more derived from Latin (i.e. erectus) than Dutch or Germanic languages.

It seems to be mostly Germanic/ Dutch derivatives. I noticed this because it's similar to my language Afrikaans, which itself is a Germanic Dutch derivative. I can almost translate most of the words.