==Во время Второй мировой войны==
{{На английском|In 1941 the organization changed its name from the ARF Tzeghagrons to the Armenian Youth Federation. This change was necessary because the name Tzeghagrons was difficult to manage among non-Armenian speakers and it was being maliciously misinterpreted in some quarters. From that point on, the leading Armenian youth organization in the United States would be known as the AYF. The life during the Great Depression and Second World War presented many new challenges for the Armenian community in America. Although faced with these additional challenges the AYF was able to continue growing, both in size and nature. The greatest effect of war on the AYF was the entrance of many AYF members into the US Armed Forces.
IIn1944-45, it is estimated that over 1000 AYF members were in the Armed Forces. Chapters sent letters, issues in Hairenik Weekly, local news, packages, and presents to members in uniform. Also during this time, the AYF raised a combined total of approximately three quarters of a million dollars in war bond and war stamp. This campaign led to the purchase of a Mitchell B-25 and a Flying Fortress.
During 1942-1946 more than 800 youth joined the ranks of the Armenian Youth Federation. The AYF created the "Song of the Year" program, which helped members learn Armenian National and Revolutionary songs, and organized essay contests, which spurred a good deal of research. Also the first edition of the well-known AYF "Blue Book" series was published in the 1945-46 fiscal year thanks largely to the efforts of Haig Der Manuelian.
With the end of the World War, AYF activity increased. Members returning from the war provided additional manpower to the organization, but this increase was short lived. The post-war years were followed by an era of declining membership due to geographic and demographic changes in the community. Despite these changes the AYF laid the foundation for another generation of youth. New programs were added to AYF's already wide array of activities, while established programs grew both in size and scope.}}
==После Второй мировой войны==
{{На английском|During the 1950's the "Blue Book" educational series focused primarily on Armenian History, but also covered geography, culture and customs, the arts, and other subjects. Complete with maps and photographs, these "Blue Books" formed a sound foundation for the educational program.
One of the greatest achievements of the post war years was the creation of the AYF Junior Organization in 1948. Instrumental in the formation of the AYF Junior Organization was Martin Bozoian, affectionately known as "Uncle Bozo." The Junior movement soon spread throughout the country, and through the concentrated efforts of people like Uncle Bozo, Sosy Krikorian Kadian, Mal Varadian, and Dick Sarajian, the Juniors soon rivaled the Senior organization with its own "Blue Book" program, Olympics, conferences, essay and literature contests, and more.
Also ranking as one of the period's outstanding accomplishments was the opening of Camp Haiastan, MA in 1951. Starting off slowly, and with separate boys and girls sessions, the camp grew gradually throughout the 1950's, becoming co-ed in 1957 and breaking the 50-camper mark the same year.
A year later, the Armenian Youth Federation marked its 25th Anniversary with celebrations great and small throughout the US and Canada. These activities helped generate enthusiasm in the ranks and revitalize the organization as a new decade approached.}}
==1960-е==
{{На английском|The 1960's were a time of great change and growth for the AYF. By this time, some of the smaller and more geographically isolated communities began to see the beginning of the end of Armenians relocated to other, larger metropolitan areas. The role of AYF forever changed from being a gathering point for local Armenian youth to serving a substitute for an Armenian lifestyle that was no longer day-to-day.
One of the single biggest changes to occur in the Sixties was the emergence of political activity in the Armenian community. During this time, there were important changes occurring on the Armenian political scene as the Fiftieth Anniversary of the Armenian Genocide ushered a new era of demonstrative political action, reiterating the demands for just reparations and the return of Turkish-occupied Armenian lands.}}
==1970-е и 80-е==