Complex sentence: Hardtack 28 landed on Jersey on 25--26 December, after climbing the northern cliff the Commandos spoke to locals, not finding any Germans they suffered two casualties when a mine exploded on the return journey.
Split into simpler sentences: Hardtack 28 landed on Jersey on 25--26 December, after climbing the northern cliff the Commandos spoke to locals, but did not find any Germans. They suffered two casualties when a mine exploded on the return journey.