What prompted the establishment of the Office of Strategic Services (OSS) as noted in the biography, A Woman of No Importance?

When the Americans entered the war in the aftermath of the Japanese attack on Pearl Harbor in 1941, they realized that it was essential to have some kind of military intelligence-gathering organization. As a result, the OSS was established, much against the wishes of several authority figures who thought such activities, and the espionage resulting from them, were ungentlemanly. Eventually, the needs of the situation proved the need to overcome those objections, and the OSS conducted several effective operations late in the war effort, some of which were led by Virginia Hall.