He (Stewart) returned with Gordon to Khartoum in February 1884 and was wounded during the siege. Stewart led an attempt to break the blockade aboard the Steamer Abbas in September 1884, along with the British consul F Powers of The Times and other residents of Khartoum. The attempt failed when the Abbas run aground somewhere between Abu Hamad and Meroë. All passengers and crew were killed.
Thanks, the movie skipped the grounding part. Made one believe they broke through.