Horne played The Honorable Richard Mirables opposite Emmy Wehlen in Marriage a la Carte at the Casino Theatre in January, 1911.

[3] In November of that year Horn began a successful run as Captain Graham in Little Boy Blue at the Lyric Theatre and later at the Grand Opera House.

The following comes from the book's foreword: Cyril Morton Horne, late Captain of the Seventh Battalion, King's Own Scottish Borderers, was killed in action, fighting with His Majesty's troops, "Somewhere in France," 27 January 1916.

Many of these verses were written in the trenches, between attack and counter-attack, with the shrapnel shells shrieking overhead, with mines and countermines exploding underneath, with the ever constant, surging gray tide of charging infantry threatening at any moment to overwhelm his command.

Living for more than a year half-underground, like the moles he so vividly pictures in one of his poems, with the chances a thousand to one against him of ever emerging from the great conflict alive, he wrote these little verses, some of them scribbled in pencil upon scraps of paper, and sent them, one by one, to the woman across the seas to whom he had said good-by when his country called.