Well, this is the first time I figure out the chords for the song by myself so I 
may be wrong. Anyway, there is no chord version for Dearly Departed on Ultimate 
Guitar so I just want to start the discussion with these chords and if you have 
any corrections, I'll gladly accept them. Also, I really apologize for my bad 
English. Greetings to all the Young Guns' fans all over the world from Russia :D

Intro: D (Em) G (A) Bm (Em) G (x2)
Listen to the rhythm guitar in the song to figure out what I mean, you strum D,G 
and Bm, chords Em and A are transitional, you strum them only once or you can skip 
them, I put them in parantheses. Also, you can play E instead of Em, both sound 
good to me :) Exactly the same for the chorus.

Verse 1:
                D     (Em)
Oh, dust and bones
  G                    (A)
That I have left behind
    Bm             A               G
Are monuments to those I used to know
    Bm             A               G
At least I know where I am on my own

Chorus (I play it slightly different from the intro, A instead of Em once but you 
can play it exactly like the intro, sounds nice, you can still skip transitional 
chords in parentheses, in chorus it's even better to do so, I think) :

               D              (Em)  G       (A)
I wanna be the last thing that you see
   Bm       (A)  G 

Be my dearly departed
D           (Em)  G         (A)  Bm       (A)
Back to when you were the only thing
  G
I need
             D   (Em) G  (A) Bm     (A)  G
Before I gave uuuuuuuuuuup, my dearly departed
        D   (Em) G    (A)  Bm     (A)  G
Gave uuuuuuuuuuuuuuuuup, my dearly departed

Verse 2:

Your sticks and stones are all that I've ever known
I'm bruised but I'm not broken and I know
At least I know where I am on my own

Chorus:
I wanna be the last thing that you see
Be my dearly departed
Back to when you were the only thing
I need
Before I gave up, my dearly departed
Gave up, my dearly departed

Bridge:
Bm            A         D              G
None of the people who tried to could make me feel this way
     A            Bm
I'll gladly do my time
Bm            A               D           G
I found you, unbound you, and tried to explain the only way, 
     A            Bm
That I knew how to say

Chorus (play the intro/chorus chords until the end):
I wanna be the last thing that you see
Be my dearly departed
Back to when you were the only thing I need
I wanna be the last thing that you see
My dearly departed
I wanna be the last thing that you see
My dearly departed
I wanna be the last thing that you see
My dearly departed
I wanna be the last thing that you see
My dearly departed      
End on A