ARRC Journal 2019 | Page 79

READY FOR TODAY – EVOLVING FOR TOMORROW THE SICILY CAMPAIGN OF 1943: LESSONS FOR A PROSPECTIVE JOINT TASK FORCE Major Andrew Cox, British Army It is no wonder that Sicily is the destination of both Exercise ARRCADE CAESAR 2018 and Exercise ARRCADE BUGLE 1-19, as the invasion of the island in July 1943 is an interesting study in the inherent problems and frictions that can face a joint task force headquarters (JTF) commanding troops from an alliance of countries. This essay will highlight some of the main lessons that a JTF can learn from the 1943 Allied campaign in Sicily. The Allied invasion of Sicily (Operation HUSKY), which began on 10 July 1943 and lasted for 38 days, was born of the need to continue pressure upon Axis forces in the Mediterranean Theatre of Operations following the conclusion of operations in North Africa. It was a strategic imperative for the Allies to open a new front, as the projected invasion of Northwest Europe was not yet ready. The campaign was only the second conducted under joint US/UK command after the invasion of Northwest Africa. It featured many unconventional and new modes of warfare, such as massed amphibious, parachute and gliderborne operations, which demanded an unprecedented level of alliance and inter-service cooperation. Such a high level of coordination was quite unfamiliar A Campaign Map of Operation HUSKY. and even considered threatening to the organisations concerned at the time. Therefore, many frictions were encountered, mistakes made and lessons learned. One such lesson was the conduct of the joint headquarters and its relationship with its subordinate commands. During HUSKY the joint headquarters (Allied Force Headquarters (AFHQ), based in Tunisia) was not present at the operational level in Sicily itself, and component commands planned almost in isolation. The result was a campaign that was land component planned and dominated, which overlooked opportunities for joint action. The greatest example of this was a critical opportunity that was missed and would have trapped Axis forces in Sicily by closing the Messina Strait early in the campaign. Each component independently dismissed closing the heavily defended strait as not feasible, but as a joint operation it would have been a possibility. There is a clear lesson here that land component dominance must be resisted and all component commands must be robustly directed and fully integrated into the plan. This will become critical to remember when the ARRC adopts the integrated and stretched model, which combines the JTF and Land Component Command within the same headquarters. Linked to the previous point, another lesson identified was the need for a common operating picture of the battlespace amongst the components at the operational and tactical level. Failure of the Allied forces to do this led to many missed opportunities and mistakes, especially in the amphibious assault stage of the operation where joint action was most critical. Amongst the land and maritime forces, a level of integrated action was achieved out of proximity and necessity. This led to an impressive level of coordinated action: The ‘Beach Bricks’, joint units configured for the management and clearance of the beaches, which were successful as was the provision of naval gunfire to support the most critical phases of the operation. Later, the maritime component enabled a series of battlegroup-sized amphibious attacks on the northern coast of Sicily with the intent of outflanking Axis defensive positions. However, the air component was not integrated at the operational and tactical levels, and so it acted independently. This led to gaps in fighter coverage, ALLIED RAPID REACTION CORPS 79