True, the grass growing in the battlefield's role was to replace death and loss with growth.
The type of poem "anyone lived in a pretty how town" is narrative. Ballad is a poem or song that is narrated in short stanzas, while acrostic is a type of poem where certain letters spell out a phrase or word. E.E narrates the life of anyone living in pretty how town beautifully, so I'd say narrative.
False. "In a Station of the Metro" is an iconic Imagist poem, but is more considered as the first haiku, even though it lacks the structure of a traditional haiku.