Question: Blanco was used in what organization of 52 states of the British Empire to clean equipment?

Context paragraphs:
British Empire: The British Empire comprised the dominions, colonies, protectorates, mandates and other territories ruled or administered by the United Kingdom and its predecessor states.  It originated with the overseas possessions and trading posts established by England between the late 16th and early 18th centuries.  At its height, it was the largest empire in history and, for over a century, was the foremost global power.  By 1913, the British Empire held sway over 412 million people, % of the world population at the time, and by 1920, it covered 35500000 km2 , % of the Earth's total land area.  As a result, its political, legal, linguistic and cultural legacy is widespread.  At the peak of its power, the phrase "the empire on which the sun never sets" was often used to describe the British Empire, because its expanse around the globe meant that the sun was always shining on at least one of its territories.

Blanco (compound): Blanco was a compound used primarily by soldiers throughout the Commonwealth from 1880 onwards to clean and colour their equipment.  It was first used by the British Army to whiten Slade Wallace buckskin leather equipment, and later adapted to coloured versions for use on the cotton Web Infantry Equipment, Pattern 1908 webbing.  Blanco became widely used throughout both world wars.

Surrogate Colonialism: Surrogate Colonialism is a term used most notably by anthropologist Scott Atran in his essay “The Surrogate Colonization of Palestine 1917–1939" to describe a type of colonization project whereby a foreign power encourages and provides support for a settlement project of a non-native group over land occupied by an indigenous people.  For Atran, the mission of Ashkenazi Zionism in Palestine is a form of “surrogate colonialism” because it was forged based on a strategic consensus with the ruling British Empire.  This surrogate colonialism, Atran further notes, is one of the major contributing factors to the Balfour Declaration, which made possible and legitimate Zionist settlement in Palestine.  Sociologist Ran Greenstein claims both Zionist settlement in Palestine and white settlement in South Africa are example for surrogate colonization, for in both the majority of settlers did not come from the ranks of the principal colonizing power of the time: the British Empire in the case of Israel/Palestine, or the Dutch Empire and later the British empire, in the case of South Africa.

Commonwealth of Nations: The Commonwealth of Nations (formerly the British Commonwealth), also known as simply the Commonwealth, is an intergovernmental organisation of 52 member states that are mostly former territories of the British Empire.  The Commonwealth operates by intergovernmental consensus of the member states, organised through the Commonwealth Secretariat and non-governmental organisations, organised through the Commonwealth Foundation.

Foreign relations of Bhutan: Bhutan has diplomatic relations with 52 states and the European Union.

Civil Aviation Authority, Bangladesh: Civil Aviation Authority, Bangladesh (CAAB) (Bengali: বেসামরিক বিমান চলাচল কর্তৃপক্ষ ) functions as the regulatory body for all aviation related activities in Bangladesh.  It is the national aviation authority operating under the Ministry of Civil Aviation & Tourism.  All nine operational airports (three international and six domestic) are operated by the CAAB.  A member of International Civil Aviation Organization, it has signed bilateral air transport agreement with 52 states.  It is headquartered in Kurmitola, Dhaka.

1930 Imperial Conference: The 1930 Imperial Conference was the seventh Imperial Conference bringing together the Prime Ministers of the dominions of the British Empire.  It was held in London.  The conference was notable for producing the Statute of Westminster, which established legislative equality for the self-governing Dominions of the British Empire with the United Kingdom, thereby marking the effective legislative independence of these countries, either immediately or upon ratification.  Economic relations within the British Empire was also a key topic with proposals for a system of Imperial preference - empire-wide trade barriers against foreign (i.e. non-empire) goods.  These proposals were further discussed at the British Empire Economic Conference in 1932.

Burma Campaign: The Burma Campaign in the South-East Asian theatre of World War II was fought in the British colony of Burma primarily between the forces of the British Empire and China, with support from the United States, against the invading forces of Imperial Japan, Thailand, and the Indian National Army.  British Empire forces peaked at around 1,000,000 land and air forces, and were drawn primarily from British India, with British Army forces (equivalent to 8 regular infantry divisions and 6 tank regiments), 100,000 East and West African colonial troops, and smaller numbers of land and air forces from several other Dominions and Colonies.  The Burmese Independence Army (known to the legitimate Burmese government and the Allies as the "Burmese Traitor Army" - BTA) was trained by the Japanese and spearheaded the initial attacks against British Empire forces.

19th century: The 19th century (1 January 1801 – 31 December 1900) was the century marked by the collapse of the Spanish, Napoleonic, Holy Roman and Mughal empires.  This paved the way for the growing influence of the British Empire, the Russian Empire, the United States, the German Empire, the French colonial empire and Meiji Japan, with the British boasting unchallenged dominance after 1815.  After the defeat of the French Empire and its allies in the Napoleonic Wars, the British and Russian empires expanded greatly, becoming the world's leading powers.  The Russian Empire expanded in central and far eastern Asia.  The British Empire grew rapidly in the first half of the century, especially with the expansion of vast territories in Canada, Australia, South Africa and heavily populated India, and in the last two decades of the century in Africa.  By the end of the century, the British Empire controlled a fifth of the world's land and one quarter of the world's population.  During the post-Napoleonic era, it enforced what became known as the Pax Britannica, which had ushered in unprecedented globalisation, industrialisation, and economic integration on a massive scale.

Legitimate military target: Protocol I to the Geneva Conventions, Article 52, provides for the general protection of civilian objects, hindering attacks to military objectives.  Article 52 states, ""In so far as objects are concerned, military objectives are limited to those objects which by their nature, location, purpose or use make an effective contribution to military action and whose total or partial destruction, capture or neutralization, in the circumstances ruling at the time, offers a definite military advantage.""

Supporting paragraphs: Blanco (compound) Commonwealth of Nations
Answer: Commonwealth of Nations