An engineer is someone who develops and implements engines. What is an engine? Citing Merriam Webster[1]: >3a: something used to effect a purpose So yes, an

An engineer is someone who develops and implements engines. What is an engine? Citing Merriam Webster[1]: >3a: something used to effect a purpose So yes, an engineer can make implements of war among many other implements. The people who actually wage war are called other things. [1]: https://www.merriam-webster.com/dictionary/engine https://www.merriam-webster.com/dictionary/engine