Stanley William Bailey OBE was a British Army officer in World War II, who reached the rank of colonel and was most notable for being the head and then political advisor of the British Special Operations Executive Liaison Mission to the Chetnik Forces of Draža Mihailović from December 25, 1942—January 29, 1944.

[5][6] Bailey reported to his superiors that Mihailović had the overwhelming support of the people in Serbia while the strength of Communists there was negligible.

[8] The British General Harold Alexander sent a personal telegram to Draža Mihailović before the Allied offensive against Rommel in Africa, requesting him to organize a large-scale campaign against Axis lines of communication in order to obstruct transport of German war materièl through Serbia to Thessaloniki and from there to Libya.

[11] The successful accomplishment of this sabotage campaign was witnessed by fellow SOE liaison officer, Colonel "Bill" Hudson.

[12] On December 1, 1942, Mihailović received a greeting from the Chief of the British Imperial General Staff, Alan Brooke[13] who expressed his felicitations for this wonderful achievement of the Yugoslav Army.

[21] When the crisis of Allies in Africa had passed, the Chetniks reverted to a policy of tactical inactivity toward the Axis forces, which was criticized by the British.

[25] When Armstrong arrived at Mihailović's Chetnik headquarters at the end of September 1943, he became the head of British mission and Bailey assumed position of his political advisor.