- Sidroc is a Forthwegian anti-Kaunian racist (i.e. Antisemite), and collaborator with Algarve. At the beginning of the war, Sidroc's home was destroyed and his mother and sister killed in a bombing, forcing Sidroc and his father Hengist to live with the family of his cousins Leofsig and Ealstan (who is Sidroc's schoolmate). Sidroc's bitterness at being in effect dependent on charity and jealousy of the much better scholar Ealstan fester, gradually turning a schoolboys' quarrel into a deadly vendetta. Sidroc develops into an active collaborator with the Algarvians (even though it was an Algarvian bomb which killed his mother) and anti-Kaunian racist, in direct opposition to his cousins' being Forthwegian patriots and "Kaunian-lovers" (literally in the case of Ealstan, who falls in love with the Kaunian Vanai). The conflict tearing the family apart culminates with Ealstan beating Sidroc senseless and running away, and later with Sidroc picking a fight in which he kills Leofsig - a result which he did not intend but did not regret, either.
- Sidroc avoids prosecution because of having enlisted in King Plegmund's Brigade, a Forthwegian-manned unit of the Algarvian army, analogous to the French Charlemagne Division of the Waffen SS. After intensive training he takes part in fighting guerrillas in the eastern Unkerlant, briefly facing Garivald (though they are not introduced to each other). He makes corporal during brutal fighting in which he takes part in such atrocities as raping peasant women and massacring Unkerlanter and Yaninan villagers. His (relatively) saving grace is his loyalty to his equally roguish comrades - especially Ceorl, a robber who joined the brigade since his other option was the gallows - and his sticking to the bitter end with the doomed Algarvian cause (even though he had originally joined up under the clear impression that the Algarvians were the winning side). Among the ruins of burning Trapani (analogue of Berlin), it falls to him to kill King Mezentio (Hitler) at the King's own request, depriving the Unkerlanter King Swemmel of the chance to kill Mezentio by slow torture. The shaken Sidroc is consolated in a highly uncharacteristic warm gesture by the rough Ceorl, and is soon afterwards killed in the Algarvian last stand against the Unkerlanter troops breaking into the royal palace.
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