Ack On The Block
The theme is the past when a soldier begins to reminisce wistfully about being back on the block. Particularly, when the soldier was still an ordinary civilian. Civilians are also described as nasty. That’s not as impolite as you may think: in the army, nasty merely means unkempt. Soldiers, of course, have gleaming boots and gleaming brass.
Blues Buddies
The term “blues buddies” does not refer to musically inclined friends. What you need to know is that the elegant dress uniform worn by the Marine Corps is known as “the Blues”. Once you have that information, it’s not a big leap to figure out that your blues mates are actually serving in the marines.