hmm what might be an example of onomatopeia in this poem?

Conquerors

By sundown we came to a hidden village
Where all the air was still
And no sound met our tired ears, save
For the sorry drip of rain from blackened trees
And the melancholy song of swinging gates.
Then through a broken pane some of us saw
A dead bird in a rusting cage, still
Pressing his thin tattered breast against the bars,
His beak wide open. And
As we hurried through the weed-grown street,
A gaunt dog started up from some dark place
And shambled off on legs as thin as sticks
Into the wood, to die at least in peace.
No one had told us victory was like this;
Not one amongst us would have eaten bread
Before he'd filled the mouth of the gray child
That sprawled, stiff as stone, before the shattered door.
There was not one who did not think of home.
by henry treece

First, familiarize yourself with the meaning of the word and its correct spelling.

http://www.merriam-webster.com/dictionary/onomatopoeia

Onomatopoeia involves the sound of words and the sounds that they describe.

The only example I can find of it in this poem is the word "drip" or the phrase that contains it.

"song of swinging gates".. is a possible example also. The words help describe the sound, but that may be in my imagination.

'shattered' and 'shambled' are both onomatopoeias but 'song of swinging gate' is an alliteration and this is why you hear the sound of the gate in it. Both the ono. and the allit. belong to the group of pattern of sounds though.

the details mentioned in the poem suggested that the village was?

In this poem, an example of onomatopoeia can be found in the line "And no sound met our tired ears, save for the sorry drip of rain from blackened trees." Here, the word "drip" mimics the sound of water falling, making it an example of onomatopoeia. Onomatopoeia refers to the use of words that imitate or suggest the sound they describe. To identify onomatopoeia in a poem or any piece of writing, you need to pay attention to words that sound like the noises they represent. In this case, the word "drip" resembles the sound of rain falling from the trees, giving the reader an auditory experience.