There are a lot of wrong tenses in this story.
e.g. Some of them have been used for war - this should be "had been used"
And nearly the whole second paragraph should be Past Perfect - ...they had left behind .... etc. (Because this has happened
before Daniel looks at these artifacts)
Then you have a shift of perspective in the third paragraph. Suddenly you say "I found..." - and in the fourth paragraph you shift back to "Daniel ..."
Last but not least there are quotation marks in the third paragraph, but only closing ones not opening ones.
I really hope you don't mind pointing this out.