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This series consists of a collection of organizational documents.

Table of Contents Includes: Aircraft Missing; July-December 1941; December 1941-February 1942; Conclusions. Item is referenced as Report No. 42.

Technical Memorandum ORO-T-18 (FEC), Project Doughboy. Extensive study. Contents include “The Infantryman’s Load” , “Weapons and Ammunition” , “Training” , “Enemy Weapons” plus appendices with supporting data and officer interviews.

Technical Memorandum ORO-T-161, Project Balance. Extensive study drawing on Normandy, NW Europe, and Korea. Contents include “Introduction and Method of Study” , “The Infantry Study” , “The Tank Study” , “The Forward Observation Study”.

Technical Memorandum ORO-T-160, Project Balance. Extensive study on combat rifles, particularly the M1 Garand. Contents include "Operational Requirements for an Infantry Hand Weapon” , “Combat Casualty Studies” , Terrain Visibility Studies” , “The Rifleman and his Weapon” , “Lethality” , “The Dispersion Weapon” , “A Theory for Determining Relative Effectiveness of Direct Fire Weapons”.

General history and organisation of the Section, plus chapters on "Bombing Effectiveness" , "The Interdiction of Communications" , "Air Defence" , "Radio Countermeasures" , Economics of Air Operations" , "Returns and Records in an Overseas Command" , among others. Also personnel records and index of reports issued by the Section.

Report includes information on the Section's origins and development, and their work on Ground Radar, Army Co-Operation, Air-Sea Warfare, Night Fighter Defense System, Investigational Flying and R.C.M., Bomber Operations, Accident Investigations, Signals Traffic, Radio Propagation, Rocket Projectiles, Operational Records, Education, Visits to the unit plus personnel and administrative details.

Arrangements for the control of the activities of the British Operational Research Organization

Brief outline of operational research with notes on method and personnel.

Quantitative study on the effects of morale and fear in soldiers using Palestine as a case study.

Includes figures and analysis of air attacks on the Atlantic Wall for D-Day, drawing on Admiralty and War Office reports. Also includes information on specific defensive positions, types of ordnance, and lessons learned.

Statistics and information on beach drenching fire, naval counter battery fire, probable errors of fall of shot, degree of neutralisation achieved on specific batteries, plus ammunition expenditure in the British sector of the D-Day landings.

Study of air, naval, and army fire support required before, during and after a seaborne landing, based on experience gained at D-Day.

Comparative study of amphibious landings in the Pacific and European Theatres, including Kwajalein N, Kwajalein S, Eniwetok, Tarawa, Saipan, Tinian, Guam, and Dieppe.

Report on the fire support for landings on Kwajalein, Roi-Namur, Engebi, Eniwetok and Parry islands, including density and weight of bombardment.

Complex report analyzing and measuring fear and anxiety among troops in the Middle East. Graphs various symptoms like tremor and memory loss, considers length of service, and records treatment.

Analysis of beach landings and observations on air attacks of coastal defenses.

No. 1 ORS Report No. 1/25. Report on effects of artillery fire in Italy over the period 18-25 October 1944 based on field observations.