Not as specific as some people would like, but here you go.
IMPORTANT: Cannons do damage from the front row, but also take double incoming damage. According to DDRJake, apparently they might also deal double damage in the front row, though that is hardly worth the casualties they will accrue from being there.
Zwirbaum's complete unit guide: [ Ссылка ]
Valefisk's guide: [ Ссылка ]
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