Task: Explanation
Input (English): The 69th Pennsylvania Infantry (originally raised as the 2nd California) was a volunteer regiment in the Union army during the American Civil War. Part of the famed Philadelphia Brigade, it played a key role defending against Pickett's Charge during the Battle of Gettysburg. Companies I and K, designated as the regiment's skirmisher companies, wore a very Americanized Zouave uniform. This uniform consisted of a dark blue Zouave jacket with green trimming, green cuffs, and sixteen brass buttons down the front on both sides of the jacket, a sky blue Zouave vest, chasseur sky-blue trousers, and a dark blue kepi. This was one of the few Zouave uniforms that did not use red as the jacket trimming. However, the Zouave uniforms were mostly destroyed during the Peninsula Campaign and were not replaced. Question: During the American Civil War, which companies of the 69th Pennsylvania Infantry wore uniforms modeled after French Army regiments? Answer: Companies I and K, designated as the regiment's skirmisher companies, wore a very Americanized Zouave uniform.
Output (English):  Companies I and K, designated as the regiments skirmisher companies, wore a very Americanized Zouave uniform.