Complex sentence: After conversion, which included fitting an ASDIC anti-submarine dome, "Lady Shirley" went into service in January 1941 and served with the 31st Anti-Submarine Group based at Gibraltar, under the command of Lieutenant-Commander Arthur Henry Callaway DSO RANVR.
Split into simpler sentences: After conversion, which included fitting an ASDIC anti-submarine dome, "Lady Shirley" went into service in January 1941 and served with the 31st Anti-Submarine Group based at Gibraltar. She was under the command of Lieutenant-Commander Arthur Henry Callaway DSO RANVR.