First Edit: Why We Fight/Aging

[Achebe]

Why We Fight

The easy way is dying first before
you tell your only love to come to bed
because to see her fade was worse than war,
the final battle words you left unsaid.

....the first three lines make sense if 'bed' is a euphemism for 'grave', but I don't understand why you, the narrator, would tell your love to die. The last line is inexplicable.

There isn't glory in becoming old
instead there's pity from the callow ones
who smirk at every story you have told,
too young to see you've handed them your guns.

...the 'guns' is too obvious a rhyme with 'ones'. 

You want to warn about the wasted days
of how they'll never love a better friend ...the "they" = "young ones" and "friend" = could be anything, including - I suppose - , "youth", but it's all avoidable and not very interesting guesswork 

the minutes marching pass so many ways....needs to be a new line
and dying after her the cruelest end. ...you were talking about "them" and all of a sudden have gone back to S1 without batting an eyelid. Makes it a bit of an aimless ramble.

But all you'll do is sneer and ponder why .... what is the "but" contradicting?? Also, not clear why you'd be "sneering" at anything. "They" might, "you"'oughtn't.
you fought so hard to only watch her die. "Fought so hard" - pointless filler

Hello Richard - it helps if you read your lines to see if they would make sense as prose. It doesn't always need to, but where it doesn't, the poetry has to be beautiful enough to justify obscurity - ist ed, the payoff to the reader has to make sense.
In your piece, I would suggest that you rework some of the lines as above. The metre is also quite humdrum, but that's a secondary issue.