Lilacs

I have read this poem over and over again but I find it hard to understand. Maybe after I get the chance to talk about it more in class I will better understand the meaning behind it.

As I was reading the poem I first thought that it was talking about nature than over time I find it more and more convincing that maybe it isn't all that simple. Besides in Prof. Coriggan's class it never is, lol. Then i came to the part of the poem that talked about teh soul and then after that ,bodies of young men from the war piled on the floor. This poem is frustrating for i don't know how to come at it in my reading. Help me!