Passage: Logan was pleased with the first small batch of samples. In June 1937, the United States Army ordered 90,000 D ration or "Logan Bars" and field tested them at bases in the Philippines, Panama, on the Texas border, and at other bases throughout the United States. Some of the bars even found their way into the supplies for Admiral Byrd's third Antarctic expedition. These field tests were successful, and the Army began making irregular orders for the bars.

Question: Which U.S. military branch ordered and tested Logan Bars at various bases around the world in the 1930s?
Army