Hi Anthony,
I'm afraid there is not much information in the images you have uploaded.
Your dates & places appear to be correct, but as far as I can tell the images only go up to March 1942.
I am not well informed on the Polish army from back then, but I would assume that most young men had to join the army, whether they wanted to or not - maybe he had been a gardener prior to conscription.
Stapo = probably Staatspolizei (state police).
The status of "protective custody prisoner" should actually mean that he was to be protected by attack from e.g. other prisoners, but may have been used as an excuse for e.g. solitary confinement or other actions.

The first record shows, as I am sure you have already worked out, his personal details (name <his first name was subsequently amended>, date & place of birth, religion <k = katolisch = catholic>, marital status <l = ledig = single>, nationality <Polish>, next of kin <Aunt, Konstanza Meczynska>, last address <as above, i.e. his aunt's address>), when arrested and by whom, dates of various camps.
I don't know what the "Qu. Kte." stands for at the bottom next to Bemerkungen (comments). Maybe someone else here can help us.
The second document is simply a list of the things he had with him (and had to hand in) when he entered the Dachau camp in July 1941. It wasn't a lot.

1 cap, 1 p. shoes, 1 p. socks, etc., plus a wallet, cigarette case, etc. His aunt's address is given as his address.
The third scan is a list of documents.
Effektenkarte is what you see in scan 2.
The others (Karte & Bogen = card & sheet/page) are official documents (possibly the other 2 scans).
The final scan looks simply like a file card.
I'm afraid I can't see anything that you don't already know.
Best regards,
Karen