266 P.2d 293 WILLIAM M. POLZIN, Appellee, v. NATIONAL COOPERATIVE REFINERY ASSOCIATION, a Corporation, and NORTHERN ORDNANCE, INCORPORATED, Appellants. No. 38,888Supreme Court of Kansas Opinion filed January 23, 1954. SYLLABUS BY THE COURT 1. JUDGMENTS — Res Judicata — Pleading Former Adjudication. Res judicata is an affirmative defense which must not only be pleaded but […]