I didn’t use the precise years that Q suggested in his post ( used 1970, 1990, 2000), and asked about WW2 only. A noticeable shift occurred. This is pretty long, even I only skimmed.
Overview of WWII Historiography Evolution
The historiography of World War II has undergone significant transformations over the decades, shaped by newly available sources, shifting societal values, geopolitical changes, and evolving academic focuses. In the 1970s, narratives often emphasized military strategies, national heroism, and Western perspectives, relying heavily on available German records. By the 1990s, the end of the Cold War opened Soviet archives, leading to more balanced views on the Eastern Front and greater attention to social aspects like civilian experiences and moral complexities. In the 2020s, global, comparative, and inclusive approaches dominate, incorporating diverse voices, memory studies, and critiques of earlier narratives. These shifts are evident in both general history books and school textbooks, with a growing emphasis on personal stories, atrocities, and underrepresented groups.
Narratives in 1970s History Books
History books from around 1970, including influential works like A.J.P. Taylor’s The Origins of the Second World War (1961, but widely discussed in the 1970s), adopted Revisionist perspectives that portrayed WWII as an “ordinary” conflict rather than one driven solely by Hitler’s premeditated aggression.  This challenged the earlier Orthodox view, which stressed fascist ideology and criminal conspiracy (e.g., Hugh Trevor-Roper’s analyses). Themes centered on the destabilizing Treaty of Versailles, opportunistic leadership, and national unity, with occupied countries’ histories glorifying resistance movements to foster post-war strength.  Military history dominated, particularly from a Western lens, with limited coverage of the Eastern Front due to Soviet secrecy—relying instead on self-serving German sources that depicted the Wehrmacht as competent but undermined by Hitler. 
In U.S. high school textbooks from this era, depictions of American involvement in WWII were often impersonal and strategic, focusing on battles, alliances, and heroic liberation with less emphasis on individual suffering or atrocities.  For instance, the Holocaust received mention but not deep exploration, and women’s roles (e.g., in factories or as nurses) were minimally addressed, reflecting limited gender integration in narratives.  Overall, books portrayed the war as a “good war” for the Allies, with positive, unifying tones and fewer critiques of Allied actions like strategic bombing.
Narratives in 1990s History Books
By 1990, Post-Revisionist syntheses emerged, blending Orthodox and Revisionist ideas—such as Alan Bullock’s view of Hitler as both a strategist and opportunist.  The Historikerstreit (historians’ dispute) in 1980s Germany influenced 1990s works, debating the Holocaust’s uniqueness versus comparisons to Soviet crimes, with figures like Ernst Nolte pushing for normalization of the Nazi past.  Themes expanded to social histories, including women’s home-front roles, collaboration in occupied nations (e.g., Vichy France), and civilian conditions.  National narratives still emphasized heroic liberation but faced challenges, as in Denmark where revisionism highlighted establishment collaboration for political leverage. 
The 1989 fall of the Berlin Wall was pivotal, granting access to Soviet archives and enabling books like those by David Glantz and Richard Overy to reveal Stalin’s regime’s brutality and Soviet military reforms, correcting German-biased Eastern Front accounts.  In U.S. textbooks, coverage shifted toward personal experiences: by the 1990s, impersonal military descriptions decreased, while soldier testimonies, human costs, and atrocities like the Holocaust gained prominence.  Gender inclusion grew modestly, with more on women’s contributions, though still secondary to male-centered stories.  Critiques of U.S. actions, such as internment camps or bombing campaigns, began appearing, reflecting post-Vietnam skepticism.
Narratives in 2020s History Books
Around 2020, historiography adopted global and comparative lenses, as in Norman Davies’ Europe at War 1939–1945 (2006, influential into the 2020s), which stressed the Eastern European theater and moral ambiguities of allying with Stalin.  Themes include reevaluating war conduct (e.g., air-sea power’s decisiveness per Phillips Payson O’Brien), memory construction, commemorations, and roles of civilians, forced laborers, and POWs.  There’s heightened focus on Wehrmacht war crimes (beyond just the SS), Holocaust denial as pseudohistory, and inclusive topics like race, gender, and decolonization impacts.  Social changes drive this: women’s roles are now central in many analyses, and global views incorporate colonial contributions and non-Western perspectives.
Textbooks continue trends from the 2000s, emphasizing personal narratives over strategy—U.S. involvement is depicted through soldier diaries, survivor accounts, and ethical dilemmas, with nearly all references to glory or impersonality phased out by the 2000s (a pattern likely persisting into 2020).  Visuals, such as WWII memorials, are analyzed for memory politics, especially in post-Soviet contexts.  Gender representation has transformed, with women’s wartime experiences integrated as core elements rather than side notes.
The modern Feminist movement was, and still is, a communist operation.
Ghurl-power.
That hat doesn’t go well with his manbag.
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IT ACTUALLY LOOKS LIKE HE’S CARRYING HRC’S BAG....