Collis is remembered largely for
While Following the Plough (1946) and
Down to Earth (1947: as one volume,
The Worm Forgives the Plough, 1973).
While Following the Plough was inspired by the years he chose to spend working as a farm labourer in the
Land Army (which mainly consisted of women, known as "land girls") in
Sussex and
Dorset during the
Second World War. He worked at J. G. Maynard's farm at
Stonegate in Sussex in 1940 for a year, and then moved to
Tarrant Hinton in Dorset for the rest of the war. The manuscript of the book was rejected by twelve publishers. At last,
Jonathan Cape accepted it, but requested much revision. Collis waited for a while and returned the manuscript largely unchanged, thanking the publisher for their suggestions; Jonathan Cape answered saying they were "delighted with the improvements".
Down to Earth was inspired by the year he spent working for
Rolf Gardiner after the war, thinning a fourteen-acre wood on his own, using only an axe and other hand tools. ==Reception==