Mexicanos, al grito de guerra (English: Mexicans, to the Cry of War) is a 1943 historical drama movie produced in Mexico starring Pedro Infante.
The film opens in the mid 1860s and Napoleon III (Sala) is gearing up towards an invasion of Mexico by French forces, although he’s not completely sure where it is.
Lupe locks Bocanegra in a room and refuses to let him out until he’s written the lyrics to the national anthem, but he insists he will not write it.
President Santa Anna (Quiroz) needs to raise funds to cover the costs of the additional military personnel, he imposes a tax on the number of windows and doors that face the street, which prompts city residents to seal windows and roos with brick, to reduce the amount of taxes they will have to pay.
[4] In one battle where the Mexican forces were near the brink of defeat Luis decides to grab a trumpet and play the song "Mexicanos, al grito de guerra", the national anthem of Mexico.