More on “Harder Homes and Gardens”
To start, I’d recommend the “5-” series Army Engineer Corps manuals. You will find some great ideas there. There was also an anonymously penned small paperback book titled “Defending Your Retreat” (1978) published by Delta Press. I assume that it is still in print. It includes good descriptions on placement of defensive wire, (both concertina and tanglefoot) and one of the best discussions on the use of flares (trip flares and parachute flares) that I’ve seen in print anywhere. The second half of the book is a reprint from an Engineer Corps field manual. IMO, for a retreat house nothing …