 Charles Henry Lyell died on 18 October 1918 of pneumonia during the global Spanish flu pandemic while serving as Assistant Military Attaché to the US, and was buried at Arlington National Cemetery.Lyell is commemorated on Panel 1 of the Parliamentary War Memorial in Westminster Hall, one of 22 MPs that died during World War I to be named on that memorial.A further act of commemoration came with the unveiling in 1932 of a manuscript-style illuminated book of remembrance for the House of Commons, which includes a short biographical account of the life and death of Lyell.