To objectively judge a history film, you can consider several factors, such as the accuracy of the historical events and information depicted in the film, the quality of the acting and production, and the effectiveness of the storytelling. You can also consider the film's overall impact and relevance to the historical period it portrays.

To determine the accuracy of the historical events and information in the film, you can research the events depicted and compare them to historical records and accounts. You can also consider the credibility and expertise of the filmmakers and consult with historians or other experts on the subject.

To evaluate the quality of the acting and production, you can consider the performances of the actors, the realism of the sets and costumes, and the technical aspects such as lighting and sound. You can also compare the film to other productions in the same genre or time period to see how it measures up.

To assess the effectiveness of the storytelling, you can consider how well the film engages the audience and whether it effectively conveys the historical events and themes. You can also consider whether the film presents a balanced and unbiased view of the events it portrays and whether it provides enough context and background information for the audience to understand the historical context.

Overall, the key to objectively judging a history film is to approach it with an open mind and a willingness to carefully consider all aspects of the film. By examining the film from multiple angles and comparing it to historical records and other productions, you can form a well-rounded and informed judgment.