An Englishman's Home

An Englishman's Home is a play in three acts by Guy du Maurier (1865–1915)[1]

The play originally appeared anonymously, under the name “A Patriot”, when it was first performed at Wyndham’s Theatre, London, on 27 January 1909, produced by Gerald du Maurier. The work caused a sensation with its theme of an invasion by an anonymous country and England's unpreparedness for such an event. The piece became a long-running success, though it caused an outrage in Germany since the German press saw it as a critique of their homeland.

The text was published by Harper and Brothers, London in 1909, now crediting Major Guy du Maurier.

In 1940 the play was made into a propaganda film titled Mad Men of Europe

1909: Performed for the first time in South Africa at the Opera House Cape Town on 3 May, directed by Edward Vincent, who also played the leading role.

https://en.wikipedia.org/wiki/An_Englishman%27s_Home

http://www.theriddleofthesands.com/du-maurier-g-1909-an-englishmans-home/