SPRINGFIELD — Judge Sarah D. Smith’s journey from an enlisted reservist in the Illinois National Guard to a military judge has spanned more than 20 years and taken her to conflict zones around the globe.Smith is the Illinois National Guard’s first military judge under the Illinois Code of Military Justice, which was enacted last year by the General Assembly and became effective in January.Smith was selected to attend the 60th military judge course at the Judge Advocate General’s Legal Center and …