155-MM. GUNS AND 105-MM. HOWITZERS (top and bottom respectively) stored in England, 1944. After about 2,250 rounds had been fired, the barrel of the 155-mm. gun had to be replaced; in howitzers the number of rounds was higher.

ENGLAND

DIESEL LOCOMOTIVES, TANK CARS, AND FREIGHT CARS lined up in England to be used on the Continent after the invasion (top). Caterpillar tractors and bulldozers stored at an Engineer depot to be used after the invasion of France (bottom).

ENGLAND

20 GROSVENOR SQUARE, LONDON, U. S. Headquarters of the European Theater of Operations (top). U. S. enlisted men passing Number 10, Downing Street, residence and office of the Prime Minister of Great Britain (bottom). During the period of the build-up in the British Isles, activities and plans were formulated for the large and small units scattered throughout the United Kingdom in a group of buildings located near the American embassy in London. This group of buildings housed the offices of the personnel whose task it was to co-ordinate the activity and training of units and, in addition, to handle the problems relating to the build-up of supplies for the invasion.