Military Review English Edition January-February 2017 | Page 50

in Mexico, the underappreciated conflict holds opportunity for further study as heirs to the legacy of nineteenth-century forces train to “win in a complex world.” While the Civil War and the Second World War typically garner the attention of historians, they reflect mobilization paradigms the United States is unlikely to soon experience. Later interventions in Korea and Vietnam, though less vast, likewise reflected far larger investments than recent campaigns in Mesopotamia and South Asia enjoyed. Though no future is certain, these trends suggest that the Army—now smaller than at any time since 1940—will accomplish future forced entries under substantial resource constraints with increasing reliance on joint cooperation.24 This circumstance imparts new relevance to the Mexican-American War. Beyond decisive victories at storied places like Buena Vista, Cerro Gordo, and Chapultepec, the Army’s ability to collaborate with maritime partners, integrate volunteer contingents into a “total force” concept, and apply balanced governance policies in occupied territories led to the efficient attainment of most national objectives. These mutually reinforcing tactical, operational, and strategic efforts, especially when contrasted against recent suboptimal outcomes in Iraq and Afghanistan, reveal a time when commanders successfully planned and directed, as now required by joint doctrine, the “deployment of forces and the arrangement of operations to achieve operational and strategic objectives.”25 Looking forward to a new century of campaigns, the implications of the United States’ historic victory in the Mexican-American War are clear: its land power institution must train and equip to win across all the phases of expeditionary warfare as it deploys to seize initiative, dominate the enemy, and stabilize war-torn regions. Accomplishing these tasks, which fulfills the Operating Concept’s requirement to “deter adversaries; respond rapidly to crises; and conduct expeditionary maneuver against enemy forces,” will require seamless unity of effort between diverse elements of U.S. national power.26 If the war against Mexico demonstrated the potential for the Army to lead multifaceted teams to decisively win on distant and unfamiliar terrain, future endeavors in far-flung theaters will surely provide the opportunity, and ultimate crucible, to do so once again. Notes 1. Patrick J. Murphy and Mark A. Milley, A Statement on the Posture of the United States Army 2016, presented to the 114th Congress, 2nd sess. (Washington, DC: Department of the Army, March-April 2016), accessed 10 November 2016, https://www. army.mil/e2/rv5_downloads/aps/aps_2016.pdf; “2015 Index of U.S. Military Strength,” The Heritage Foundation website, accessed 8 November 2016, http://index.heritage.org/military/2015/; Dan Parsons, “Odierno Calls For Ex