Question: Have Douglas fir been used to fight wars?, Answer:Yes, Description of Douglas fir: species of tree, Fact1: Douglas fir are a type of tree., Fact2: Douglas fir are used to make ships., Fact3: The Minesweeper is a small warship made from Douglas fir., Fact4: The Minesweeper was made of wood to reduce it's risk magnetic signature and likely hood of detonating mines.
Step1: What are the uses of Douglas Fir?, Step2: Does #1 include vehicles of war?, Wikipedia page for step 1: wiki: Douglas Fir, Wikipedia page for step 2: wiki: Avenger-class mine countermeasures ship, not_definitive_answer: False, incorrect_answer: False