The purpose of this paper is to go beyond the usual scheme associated with Clausewitz, which narrows his life down to being a soldier and concentrates solely on his theory of war. By presenting his main methodological approach, the study examines the role of history in Clausewitz’s thinking and analyses how his historical studies tested and validated his evolving theoretical structure and how they could enable soldiers who had never fought or served as commanders to develop their battle intuition and enhance decision making process by learning from real world examples in times of peace.
The first order variation of critical loads of thin-walled columns with bisymmetric open cross-sectiondue to some variations of the stiffness and location of bracing elements is derived. The con-siderations are based on the classical linear theory of thin-walled beams with non-deformablecross-section introduced by Vlasov . Both lateral braces and braces that restraint warping andtorsion of the cross-section have been taken into account. In the numerical examples dealing withI-column, the functions describing the influence of location of the braces with unit stiffness on thecritical load of torsional and flexural buckling are derived. The linear approximation of the exactrelation of the critical load due to the variation of the stiffness and location of braces is determined.