Armageddon 2419 A.D. is a science fiction novella by Philip Francis Nowlan that first appeared in the August 1928 issue of the pulp magazine Amazing Stories.

American efforts to avoid war with the Hans failed, and in 2109 AD, the latter attacked the US using fleets of airships armed with disintegrator rays.

After conquering the U.S. and Canada, these "Airlords of Han" ruled North America as a province of the world empire, from 15 great cities they established across the continent.

Living in cooperative gangs and hiding in the forests from the Hans, Americans secretly rebuild their civilization and develop the new technologies "inertron" and "ultron".

Ultron, in turn, is an "absolutely invisible and non-reflective solid of great molecular density and moderate elasticity, which has the property of being 100 percent conductive to those pulsations known as light, electricity and heat."

Exposed to radioactive gas, Rogers fell into "a state of suspended animation, free from the ravages of katabolic processes, and without any apparent effect on physical or mental faculties."

He finally notices a wounded boy-like figure, clad in strange clothes and moving in giant leaps, who appears to be under attack by others.

It turns out that he is helping a woman, Wilma Deering, who, on "air patrol", was attacked by an enemy gang, the "Bad Bloods", which is presumed to have allied themselves with the Hans.

Rogers stays with the gang for several days, learns about the community life of Americans in the 25th century, and makes friends with the people, especially with Wilma, with whom he spends a lot of time.

He instantly reorganizes the governing structures of the gang by creating new offices and makes plans for the battle with the Sinsings, again using the knowledge he gained in the First World War.

While Armageddon 2419 A.D. heavily emphasizes war, military tactics and technology, the Buck Rogers comic strip is based on adventures and romantic problems.

The entire "occupied America" theme of the original book was tacitly dropped, and the United States in which the comic strip Buck Rogers lives seems a direct continuation of the present-day one, which had not undergone centuries of Han occupation.

The first sequel begins c. 2476 A.D., when a widowed and cantankerous 86-year-old Anthony Rogers is mysteriously rejuvenated during a resurgence of the presumed-extinct Han, now called the Pr'lan.