Premise: Peter L. N. Padfield (born 1932) is a British author, biographer, historian, and journalist who specializes in naval history and in the Second World War period. His early journalism appeared under the name P. L. N. Padfield. As well as his non-fiction work, he has also published four novels.
Hypothesis: Peter L.N. Padfield liked writing naval history but didn't enjoy writing fiction as much.