C. S. Lewis was commissioned to write something to encourage the troops during WWI. "Screwtape Letters" was the result.
It is a series of letters from an experienced devil (Wormwood) advising his young, inexperienced nephew (Screwtape) on the best ways to corrupt the soul of the human to whom he has been assigned as guardian devil.
Sorry... my post wasn't clear. I need to be careful posting when it's so late. I've heard the names Screwtape and Wormwood a lot recently, having read the book last summer and we still talk about it in our small group. The other names I haven't heard in a while but I'm definitely familiar with all names.
Not quite. You may have made a typo, but the fact is, that Lewis was too busy getting his ass shot off (literally, he joked about it later in life) as a 'litter' bearer in WWI. (the equivalent of one of our combat medics, or corpsmen if one is a Marine). i don't know if he wrote Screwtape as encouragement for the troops in WWII or not. The book was completed in 1942, being first released as a series of articles in the Guardian.
The work was thought provoking, even if not well read in it's time. Still, i found Lewis' That Hideous Strength the most frightening book i have ever read. Machen's Christianity and Liberalism would be second.