I definitely see a few literary devices at work here.
"worry in every language" = metaphor
"my country tis of--" = allusion
"by gorry by jingo by gee by gosh by gum" = alliteration + dialect/slang (diction)
rushed like lions to the roaring slaughter = simile + personificataion
If you are looking for general feedback on your poetry, there are a few more pieces of writing advice I offer beyond recognizing your literary elements, however.
One important thing to note about poetry, is that although the form and technical (or formal) rules of writing can be bent ,...
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