Complex sentence: They won a medal and so impressed the British Army that they placed an order for 25,000 Enfield rifles for the Crimean War and also ordered 141 of the Robbins & Lawrence metal-working machines making the firm the first large-scale exporter of machine tools.
Split into simpler sentences: They won a medal and so impressed the British Army that they placed an order for 25,000 Enfield rifles needed for the Crimean War. They also ordered 141 of the Robbins & Lawrence metal-working machines making the firm the first large-scale exporter of machine tools.