What is the origin of the idiom "rough and ready" and when to use it?

The idiom "rough and ready" originated from the military context, specifically referring to troops or soldiers who were prepared for battle despite their lack of formal training or refined appearance. It conveys the idea of being adequately equipped and capable of handling a situation, even if it means relying on practicality and resourcefulness rather than sophistication or polish. Over time, the idiom has evolved to describe anything or anyone that is unrefined yet effective or functional in achieving a desired outcome.