Front: Text describes action on various war fronts: U.S. Fleet Active; Alies Race Through Reich - Soviets Strike Toward Austria Maps: Allies race through Reich--Soviets strike toward Austria [Germany], Pacific fleet action, Budapest to Vienna. Inset map: The Ruhr. Back: Color photograph of a flame-throwing tank is accompanied by text highlighting research and development to produce new weapons.

Front: Text describes action on various war fronts: Americans Isolate Ruhr; Vienna Threatened; Ryukyus Invaded. Maps: Eastern Europe, South Pacific, Okinawa. Back: Map of China's southeast coast. Includes inset maps: Shanghai, Wenchow, Foochow, Swatow, Canton, Hong Kong.

Front: Text describes action on various war fronts: Allies squeeze Reich; Okinawa resistance stiffens. Maps: [Western Europe]; Allies squeeze Reich, U.S. forces make new landings on Tawitawi and Masbate - Japanese battleship sunk, Okinawa resistance stiffens. Back: Illustration of a young woman looking at a 10 dollar war savings bond. Caption: "It will look even bigger-- after the war!"

Front: Maps: Okinawa Battle rages; Vienna taken; Europe; Germany; Italian offensive; Insets: Okinawa. Back: WAC: 3rd anniversary. Includes 8 photographs along with text descriptions and one cartoon by Sgt. Herblock.

Front: Maps: Soviets Enter Berlin ; Pacific Allies Gain. Inset map: Berlin. Back: [text and ill.]: San Francisco Conference -- Geared to peace and progress -- International organization proposed at Dumbarton Oaks.

Describes procedures for signal photomail (microfilmed mail) service operations. Includes instructions for handling V-mail (personal correspondence) as well as official War Department photomail.

An Army field manual "designed as a supply and evacuation guide for armored units.... Covers supply of armored units, evacuation of personnel, prisoners of war, vehicles, and salvage; rail and water transportation and trains in theater of operations."

Describes procedures for criminal investigations conducted by military police during wartime. Discusses the purposes and functions of the Security Intelligence Corps (SIC).

"This Technical Manual describes the various types of electric generating equipment used on Army posts and discusses its operation, maintenance, and repair."

Report presenting a boundary-layer-transition and profile-drag investigation conducted on an experimental low-drag wing installed on a P-47 airplane designated the XP-47F. Measurements were made at a section outside the propeller slipstream with smooth and with standard camouflage surfaces and on the upper surface of a section in the propeller slipstream with the surface smoothed. Results regarding the right wing section outside the slipstream and left wing section in the propeller slipstream are provided.

Note presenting an analysis of a procedure for artificially aging assemblies and subassemblies to improve the strength properties of the wrought aluminum alloys comprising their principal structure. Information is given on the magnesium alloys which may be present. The forms in which magnesium alloys may be encountered are casings, extrusions, forgings, and sheet.

Report discussing tests on three sets of elevators with various combinations of section contour, balancing tabs, bobweights, and control-system mechanical advantage on an SB2C-1C airplane. Effects on maneuvering stability, a comparison of production elevators and recommended arrangement, and internal elevator pressures are described.

Report presenting a boundary-layer transition and profile-drag investigation on an experimental low-drag wing installed on a P-47 airplane designated the XP-47F and supplied by the Army Air Forces. Measurements were made at a section outside the propeller slipstream with smooth and with standard camouflage surfaces and on the upper surface of a section in the propeller slipstream with the surface smoothed.

Report presenting data on the thermal performance and static and total pressure drop characteristics of a fluted-type exhaust gas and air heat exchanger. Results regarding heat transfer, pressure drop, and non-isothermal pressure drop are provided.

Report presenting results of tests of the thermal performance and the static pressure drop characteristics of a flat-plate type exhaust gas and air heat exchanger. The ventilating air shroud built into the heat exchanger gives characteristics of cross flow and parallel flow.

Report presenting an analysis of the thermopile radiometer as used in the measurement of irradiation and radiant power interchange is given. The theory of the instrument when used to measure irradiation and net radiant power interchange is developed, and the precautions to be observed when using it for these measurements are presented.

Report presenting data on the thermal performance and the static pressure drop characteristics of a flattened-tube type crossflow exhaust gas and air heat exchanger. The measured thermal outputs and static pressure drops are compared with predicted magnitudes.

Report presenting data on the thermal performance and static pressure drop of a finned-type cast-aluminum exhaust gas and air heat exchanger. Results regarding heat transfer, isothermal pressure drop, and heater surface temperature are provided.

Report discussing testing on a retractable spoiler aileron on the NACA 66(215)-216 airfoil with a 25-percent-chord slotted flap. The effects of spoiler thickness, spoiler gap, spoiler bevel angle, spoiler roughness, and flap deflection on aerodynamic characteristics are described.

Report discussing the aerodynamic characteristics of the wing and isolated tail of the Bell XP-83 airplane in attitudes simulating spin conditions. Information about the the aileron hinge moment, angle of attack, and elevator hinge-moment is provided.

Flat-plate flaps with no wing cutouts and flaps having Clark Y sections with corresponding cutouts made in wing were tested for various flap deflections, chord-wise locations, and gaps between flaps and airfoil contour. The drag was slightly lower for wing with airfoil section flaps. Satisfactory aileron effectiveness was obtained with flap gap of 20% wing chord and flap-nose location of 80 percent wing chord behind leading edge. Airflow was smooth and buffeting negligible.

Report describing power-off tests in the 6- by 6-foot test section of the stability tunnel to determine the variation of the static lateral stability characteristics with vertical-tail area, fuselage length, and wing dihedral. Two NACA 23012 rectangular wings with rounded tips and dihedral angles of 0 and 5 degrees were tested alone and in combination with three circular fuselages of different lengths. Results regarding the interference effects, effect of horizontal tail, effect of changes in fuselage length, effect of changes in vertical-tail area, effect of changes with constant tail volume, effect of changes in dihedral, and a comparison of data from 7- by 10-foot and stability tunnels are provided.

Report presenting a theoretical study of a diesel engine-compressor-turbine combination for aircraft application. The performance characteristics of the compressor and turbine chosen for analysis are believed to be attainable on present aircraft equipment.

Report discusses the results of bench testing on a German BMW 301D2 to determine the relation between the control parameters and any special methods by which the control principles are adapted to the control of the engine. Characteristics are presented for a variety of simulated manifold pressures, charge-air temperatures, engine speeds, and altitudes. Special attention is paid to the pressure characteristics of the servo-oil system and the potential effects of its failure on the operation of the automatic engine-control system.