sentences:  He received LLDs from the University of Edinburgh in 1935 and the University of St Andrews in 1950.Kerr made early contributions to ship camouflage in the First World War.He wrote to First Sea Lord Winston Churchill on 24 September 1914, advocating camouflage by disruptive coloration — breaking up outlines with patches of strongly contrasting tone — and countershading — shading guns into invisibility with lighter paint below, darker paint above.