It is always nice to hear about unsung heroes.
Sir Thomas Peirson Frank, a civil engineer, was the coordinating officer for Road Repairs and Public Utility Services for London from 1939 through 1945. He was knighted in 1942 for his direction of the repair services that enabled London to carry on in spite of heavy air raids. He is credited with having deployed teams of "rapid response" that repaired upwards of a hundred breaches in the Thames wall, thus preventing low-lying areas of London from being flooded during German attack in World War II, an achievement that, for reasons of protecting "the public's morale," was kept secret during the war.
Nice work, Sir Frank.