The first Black Library short story published under the name Rachel Harrison, rather than Ray Harrison, Execution is a powerful depiction of the human cost of war for the Imperial Guard, and the burdens placed upon their political officers. Having executing the captain of the 11th Antari Rifles for refusing to follow orders, commissar Severina Raine takes command of a daring mission to break the siege of a rebel-held fortress. After her uncompromising show of authority, Raine has to maintain her grip on the morale of her troops while leading them into ferocious battle.