I'm where you keep your most private possessions<br>
With a small adjustment, I'm always on the move<br>
Again, and I'm one of you, lacking aggression<br>
Once more, at my end, my son has something to prove

If you gut *him*, you may have done so for this<br>
Change that, and a group of great beasts have you found<br>
Again, it's my versatile partner, my bliss<br>
Who protects me when orderly enemies are 'round

Make a rhyme, if you've done a good job it will squeak<br>
Sort them out and you'll find a great tool comes to view<br>
This weapon, however, is not the word that you seek<br>
It's the user, of which, in my land I have two

Take his opposite, and several later you've got one<br>
Change its first, and this riddle's answer you *desire*<br>
Conjugate incorrectly, and you've not got a verb, son<br>
But one close to this soldier, in his path, you'll retire.

Again, recall the user of the weapon above<br>
When his opposite appears, it is given this name<br>
One fix and you've found my minions least loved<br>
But without them I'd be at a loss in this game
<hr>
**Disclaimer:** This riddle is intended to be a much harder follow-up to my [quickly solved puzzle][1] last week. At the end of each line, you should be left with a one-syllable, common word. **Only lines 11 and 20 do not yield a word.** Most words will only change by one letter between lines, as hinted, but this riddle is more complex: phrases like *gut him*, *sort them out*, and *take his opposite* should be interpreted analogously to *behead me* from the previous riddle, which was wordplay for *remove my first letter*.<br>
Other words will change completely across line pairs, but I hope not to confuse you too badly, so I'll provide **hints here:**<br>
**Hint 1:**
>! From line 4 to 5, our first odd pair appears<br>
>! Hark! From first to third person it veers!<br>

**Hint 2:**
>! In lines 7 and 8, the subject is the same<br>
>! For [8], the [7] of [4] is given this name.<br>

**Hint 3:**
>! Line 3 describes its word in two separate ways<br>
>! It makes a good place to begin solving this maze.

  [1]:http://puzzling.stackexchange.com/questions/18727/a-poem-of-dynamic-words