He was appointed a Knight Commander of the Order of the British Empire in the 1918 Birthday Honours for his services during the war. Henn died in a London hospital, age 74, after falling and breaking his thigh in two places and contracting pneumonia.
In recognition of his service during World War I, he was appointed a Knight Commander of the Order of the British Empire in the 1918 Birthday Honours. He died in a London hospital at the age of 74 following a fractured leg and pneumonia.