Knife Fighting Manuals - A duel is an arranged engagement in combat between two people, with matched weapons, in accordance with agreed-upon rules.Duels in this form were chiefly practiced in early modern Europe with precedents in the medieval code of chivalry, and continued into the modern period (19th to early 20th centuries) especially among military officers. During the 17th and 18th centuries (and earlier. SAS Survival Guide 2E (Collins Gem): For any climate, for any situation [John 'Lofty' Wiseman] on Amazon.com. *FREE* shipping on qualifying offers. SAS Survival Guide 2E is the revised and updated edition of the world’s preeminent survival guide.